After pollination and fertilization following changes occur in a flower: (i) The petals, stamens, style and stigma of the flower fall off. (ii) Sepals dry up and hold the ovary. (iii) The ovules confined in the ovary develop into seeds.
In what ways can ecosystems be analyzed by the levels of organization within them?
Answer:
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The organism in the photo is a daphnia, or water flea. Daphnia are tiny aquatic organisms that live in most freshwater habitats. Adults range from less than 1 to 5 mm in length. They are good swimmers and eat mostly algae. Daphnia become mature at 5 to 10 days, and an adult female can produce up to 100 eggs every 3 or 4 days during its 2-month life span. When harmful algae rapidly increase in the daphnia environment, daphnia can develop adaptations to tolerate the negative effects of the algae within 10 years. What characteristic of the daphnia allows the population to adapt to environmental change
Answer:
The characteristic of daphnia which allows the population to adapt to the environmental change is the short generation time.
Explanation:
As evident from the text, the maturity comes in 5 to 10 days and they reproduce for the next 2 months at a rate of 100 eggs every 3/4 days. This is a short generation time which makes the evolutionary changes easy and less time-consuming to incorporate.
FIRST TO ANSWER GETS 25 POINTS AND BRAINLYEST A. Describe how electricity is generated in a coal power plant.
B. Provide one example of a RENEWABLE ENERGY SOURCE that creates electricity
in a "similar" way.
Answer:
A. By burning coal in a boiler to produce steam. The steam produced, under pressure, flows in a turbine, which spins a generator to create electricity
B. Wind turns the propeller-like blades of a turbine around a rotor, which spins a generator, which creates electricity
what can cause rapid revolution?
Answer:
Although scholarly debate continues about the exact causes of the Revolution, the following reasons are commonly adduced: (1) the bourgeoisie resented its exclusion from political power and positions of honour; (2) the peasants were acutely aware of their situation and were less and less willing to support.
Explanation:
brainliest?
If DNA code consists of only four nitrogenous bases, how can it produce so much variety among
organisms of the same species?
Explanation:
I tnought this will help you
If DNA code consists of only four nitrogenous bases, still it produces so much variety among organisms of the same species with the help of Codons and amino acids sequences.
What do you mean by Nitrogenous bases?Nitrogenous bases may be defined as a molecule that contains nitrogen and possesses the chemical properties of a base. The nitrogenous bases that are found in DNA are Adenine (A), Guanine (G), Thymine (T). and Cytosine (C). Uracil (U) is present instead of Thymine in RNA.
There is a total of 4 nitrogenous bases that are found in DNA and RNA. Each codon codes with the help of three nitrogenous bases. So, total variations = [tex]4^3[/tex] = 64.
But there are only 20 amino acids that are commonly known. Some codons are stop codons, they do not code for any amino acids. While some codons code for the same amino acids.
Therefore, If DNA code consists of only four nitrogenous bases, still it produces so much variety among organisms of the same species with the help of Codons and amino acids sequences.
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What do these gases form in the atmosphere that is detrimental? How does this then negatively affect plants, animals and the environment?
referring to: Sulfuric acid and Sulfur trioxide.
Answer:
They form from burning fossils fuels like coal and oil that put more carbon dioxide in the atmosphere. An example of its negativity affect is the melting ice caps it adds more heat which speeds up the melting process (duh) this is the change in animals and the environment and for and for plants it can cause a negative impact on growth.
Explanation:
SCIENCE
Sandy made the following chart comparing the energy sources of the carbon cycle. What correction needs to be made?
A. Decomposition is driven by internal energy.
B. Seashell creation is driven by internal energy.
C. Formation of fossil fuels is driven by solar energy.
D. Rock formation is driven by solar energy.
Rock formation is driven by solar energy
Answer:
a.
Seashell creation is driven by internal energy
Explanation:
Identify following phases of meiosis (URGENT!)
Answer:
Prophase I
Metaphase I
Anaphase I
Telophase I
Meiosis stage 1 Phases ^
Meiosis stage 2 phases
Prophase II
Metaphase II
Anaphase II
Telophase II
What role did you play in the production of the protein product?
Explanation:
Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.These proteins provide structure and support for cells. On a larger scale, they also allow the body to move.
If there weren't alleles for different traits, but rather only one version of a gene for different traits, how would humans be different?
Answer:
Humans would look exactly alike
Explanation:
An allele which is a variation of a gene which expresses a particular trait(Phenotype).
For example, if humans have a gene for eye color but has different alleles for the color being black or brown for example, their phenotypes are different since the alleles are different.
But, if the alleles for the eye color are all the same, the eye color and every other phenotype would be the same. So, there would be no variations in eye color, height, color of skin etc. So, all humans would thus look alike having one set of genes for the different traits.
Please help, any unnecessary answers will be reported. Thanks :)
Answer:
The one all the way over to the left, the dark blue one. I hope this helps!
Explanation:
Answer: first one
Explanation: The brain uses the nerves to tell the muscles when to move. The nerves also deliver information on what to do in a fight or flight case
Which of the following is a physical adaptation for the underlined animal?
Answer:
Physical adaptations do not develop during an individual animal's life, but over many generations. The shape of a bird's beak, the color of a mammal's fur, the thickness or thinness of the fur, the shape of the nose or ears are all examples of physical adaptations which help different animals survive.
A Ecosystem C Community
B Habitat D Population
Choose the most appropriate vocabulary term from the list above
1 ________ All the living and non living things in an area
2 ________ All the ants in an anthill
3 ________ An area that provides food and shelter
4 ________ Fish, frogs, turtles, lily pads and dragonflies are all members of the same what?
5 ________ All the blackbirds in your neighborhood
6 ________ A forest
7 ________ The damp soil within a forest in which a mushroom grows
8 ________ Different populations that live together in a particular area
9 ________ A prairie dog, a hawk, and a badger all members of the same what?
10 ________ The rainbow trout in a stream
Answer:
1: a
2: d
3: b
4: c
5: d
6: b
7: b
8: c
9: c
10: d
Answers proven from test book. :)
What are the sides of the DNA ladder made of?
Answer:
The sides of the ladder are made of alternating sugar and phosphate molecules. The sugar is deoxyribose. The rungs of the ladder are pairs of 4 types of nitrogen bases. Two of the bases are purines- adenine and guanine.
Explanation:
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Answer:
Explanation:
The shape of DNA is a double helix, which is like a twisted ladder. The sides of the ladder are made of alternating sugar and phosphate molecules. Deoxyribose, which is a pentose, and a phosphate group are the two molecules that together form the two sides of the DNA. The rungs of the ladder are pairs of 4 types of nitrogen bases.
Is race a biological characteristic determined by our genes?
Answer:
No, they are not. The concept of human races appears to be solidly grounded in present-day biology and our evolutionary history. But if you asked that conference of geneticists to give you a genetic definition of race, they wouldn’t be able to do it. Human races are not natural genetic groups; they are socially constructed categories. Genes certainly reflect geography, but unlike geography, human genetic differences don't fall along obvious natural boundaries that might define races.
What type of chemical bond exists between two water molecules
Hydrogen bonds, type of chemical bond exists between two water molecules.
What is a chemical bond?A chemical bond is what binds atoms in molecules together. Electrical forces between positive charge atomic nuclei and negative-charged electrons form bonds. A chemical bond is a long-lasting attraction between ions or atoms that allows molecules and crystals to form.
Hydrogen bonds arise between neighboring water molecules' hydrogen and oxygen atoms. A hydrogen bond is formed by the attraction of individual water molecules. A water molecule is made up of two hydrogen and oxygen atoms atom, with one partly positive hydrogen atom connected to a more highly electronegative atom.
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Your question is incomplete, but most probably the full question was.
A) ionic bondsB) hydrogen bondsC) covalent bondsD) valence bondsHow are flowering plants and conifers alike? A.They both have incomplete flowers. bThey both make fruits. cThey both reproduce by means of seeds. dThey both have leaves that look like thin needles
Answer:
cThey both reproduce by means of seeds.
Explanation:
This is because both flowering plants and conifers reproduce by seeds. Although Conifers are gymnosperms, and angiosperms are flowering plants but conifers grow their seeds naked, it often appear on the scales of a cone, instead of encased in fruit. The flowering plants seeds are encased in fruits. Both conifers and flowering plants are vascular plants that is they have vascular tissues which help them conduct water and nutrients
Name the primary producers of grassland ecosystem
Answer:
Explanation:
Grasses, shrubs, trees, mosses, lichens, and cyanobacteria are some of the many producers found in a grassland ecosystem.
what is the probability for a child to inherit one of the two alleles from her dad??
a: 100%
b: 50%
c: 0%
d: impossible to know
Answer:
A: 100%
Explanation:
We get one allele from each parent, one from mom and one from dad. Hope it helps :)
the major purposes of Mitosis in living organisms includes, the ___ of organisms, ___ injuries,and maintenance of the organism, during ____ (a phase of cell division) the cell grows larger and replicates its DNA in order to prepare for cell division, known as _____. the original cell that divides is called the ____ while the two new cells are called ____
answers
mitosis, parent cell , daughter cell , growth , healing, and interphase
In order from youngest to oldest, what is most likely the correct order for the rock layers??
Answer: 1, 5, 2, 3, 4.
Explanation: Using process of elimination layer four should be the oldest and the only one that has layer four last is number 2. Therefore I assume it is number 2.
____ The bristle worm living with the hermit crab.
A. Mutualism
B. Commensalism
C. Parasitism
Answer:
A. Mutualism
Explanation:
Mutualism The bristle worm living with the hermit crab.
please help i’ll give brainliest
Answer:
the largest amount of organisms are the producers, so yeah choose producers
PLEASE ANSWER, WILL GIVE BRAINLIEST
Which of the following best describes the use of rainforest plants as anticancer drugs? a. Most rainforest plants have been tested for their cancer fighting properties.
b. Twenty-five percent of the active ingredients in cancer drugs are exclusively rainforest plants.
c. The most powerful anticancer drugs are not rainforest plants.
d. All of the above
Answer:
b. Twenty-five percent of the active ingredients in cancer drugs are exclusively rainforest plants
Explanation:
Answer:
B.
Explanation:
1. Which systems (2) are primarily responsible for movement of the body
Answer:
The correct answer is -muscular system and skeletal system.
Explanation:
The skeletal system and the muscular system work together to move the body or body parts. Different types of tissues form the muscular system that and their action on bones controls the movement of the body in vertebrates.
Tendons are tough muscles that attach with the bones and joints allow the movement by contraction of muscle that helps in moving bones from joint. Muscle normally acts by contracting and relaxing in pairs.
The greenhouse effect on Earth keeps it warm enough for liquid water to exist. However, on Venus, the greenhouse effect warms the planet to ___. A 460°C B 900°C C 90°C D 47°C
Answer:
A. 460°C
or about 900 degrees fahrenheit
What mass of methane gas (CH4) is required in order to follow the Law
of Conservation of Mass?
Answer:
2.4g
Explanation:
i got the same question and got it right
Which statements about geocentric model and heliocentric model are true? Select the two correct answers.
A. They both are models of the solar system.
B. They both show the position of Earth relative to the Sun.
C. They both show Earth at the center of the solar system.
D. They both show the Sun at the center of the solar system.
Answer: Your correct answer would be both A & B.
Explanation: A is the correct answer because both of these models are in fact models of our solar system. The geocentric model had Earth at the center of the solar system with all the other planets and sun rotating around us. The heliocentric model is the accepted model of our solar system today with the sun at the center and planets rotating in slightly elliptical fashions around it due to gravitational pull. B is also correct because as I just explained, both models position Earth in relativity to the sun though both models vary greatly. The aim of both of these models was to specify where Earth was exactly in the solar system. I hope this has been of use to you! Please do not hesitate to ask if you have other questions :)
The two correct statements about the geocentric and the heliocentric model are:
They both show the position of Earth relative to the Sun. They both are models of the solar system.The geocentric model
The geocentric model has the assumption that the earth is at the center of the universe. The sun and the planets are said to revolve around the earth in this model
The heliocentric model:
The heliocentric model has the assumption that the sun is at the center of the universe. The earth and the planets revolve around it.
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Information specifying the traits of an organism is carried in DNA by
А .packing atoms loosely into the shape of a round globule
B. packing molecules loosely into the shape of a pleated sheet.
C. packing atoms tightly into the shape of a single spiral.
D. packing molecules tightly into the shape of a double helix.
Answer: c
Explanation:
A student was asked to prepare a model of the rock cycle as it moves matter slowly through the Earth. The student creates a model,
as shown here. In order to revise the model, how should the lettered components be modified in order to create an accurate model?
Select all choices that apply
es )
A)
Letter A should represent igneous rock that is extruded from magma,
B)
Letters A and B should both be igneous rock, which is found near the
Earth's surface.
C)
Letters and B should be sedimentary rock, which is found under layers of
other materials
D)
Letter C should represent metamorphic rock which changes composition
under heat and pressure.
E)
Letter B should represent sedimentary rock that is buried by layers of sand
and deposited material.
Answer:
A) Letter A should represent igneous rock that is extruded from magma.
D) Letter C should represent metamorphic rock which changes composition under heat and pressure.
E) Letter B should represent sedimentary rock that is buried by layers of sand and deposited material.
Explanation:
Igneous rock comes from magma/lava. Sedimentary rock is buried as layers are deposited. The metamorphic rock is formed when one type of rock changes from one form to another. The single letter options are all right here.
The Rock Cycle is related to transformation of three basic Rock types into one another through the Plate tectonic activity, along with weathering and erosional processes. Hence Correct options are A, D, and E.
The Rock CycleIt is a phenomenon through which three basic types of Rock transformed into one another. These three types of Rock are Igneous, Metamorphic, and Sedimentary rocks.
Therefore, to prepare a model which shows Rock Cycle, student need to have three types of Rock as mentioned in option A, D, and E.
A) Letter A should represent igneous rock that is extruded from magma.
D) Letter C should represent metamorphic rock which changes composition under heat and pressure.
E) Letter B should represent sedimentary rock that is buried by layers of sand and deposited material.
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