Answer: don’t know really how to explain it but it’s geographic isolation
The process which is responsible for the evolutionary change among polar bears in Alaska and the brown bear in Russia is geographical isolation.
What do you mean by Evolutionary change?Evolutionary change may be defined as the heritable change which is seen in populations and species over a long period of time, due to several mechanisms such as natural selection, random genetic drift, erotic selection, and mutation.
The mechanism of geographical isolation is considered one of the important factors in causing speciation.
This happens when the individuals of the species may be isolated due to any physical means such as mountains, rivers, etc for a long period of time.
Therefore, the process which is responsible for the evolutionary change among polar bears in Alaska and the brown bear in Russia is geographical isolation.
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State three ways we can protect our Earth.
Answer:
Recycle, Plant Trees, Use reusable bags
Explanation:
Which of the following pathogens is nonliving?
A. tapeworm parasite
B. T. rubrum fungus
C. E. coli bacterium
D. influenza virus
Answer:
D
Explanation:
Took PLATO test and it was correct
heyy everyone I need the ans as quick as possible so the qn is. What are the similarities between queen been and worker been. please help!!!!!!
Answer:
The female queen is large in size and specializes in reproduction and workers are small and engage in colony-maintaining activities.
Explanation:
which statement best summarizes the development of the atomic theory over time
What part of the chloroplast uses-thesun energy?
Answer:
chlorophyll
Explanation:
According to scientific research and evidence, Photosynthesis is part of chloroplasts uses the sun energy.
Explanation:
if you write this in exam I bet you will get full marks if it is about 2 Marks. ((Thank me later and mark me as brainliest if it helped you))#
17. How does the placement of the stamen in relationship to the pistil affect the way in which
the flower is fertilized?
Answer:
this placement increases the chances of pollination
Explanation:
Pollination refers to the process of transferring pollen grains from the male stamens of a flower to the female stigma. The stamens generally surround the pistil and they are composed of two structures: 1-the anther (produces male reproductive cells or pollen grains) and 2-filaments (supports the anthers). Moreover, the female pistil is generally located at the center of the flower and it is composed of three structures: stigma (a sticky bulb in the center of flower), ovary (contains female reproductive cells or ovules), style (supports the stigma). The arrangement of the plant's reproductive organs increases the chances of pollination: when a pollinator (e.g. bees) visits a stigma for nectar it has to go through the stamen and catch pollen that then carries to the stigma of the same flower (auto-pollination) or another flower (cross-pollination). Moreover, the flowers also have petals and sepals that help attract pollinators and protect the flower bud, respectively.
Has anyone on here ever taken Environmental Science on grad point? Can you help with the final review :)
Scenario
Indepe
Vari
A company wants to test a new dog food that
is suppose to help overweight dogs lose
weight. Fifty dogs are chosen to get the new
food, and 50 more continue their normal
diets. After one month, the dogs are
checked to see if they lost any weight.
What’s the Independent variable, dependent variable, experimental group, and and control group?
Answer:
- Independent Variable: the new dog food
- Dependent Variable: weight loss in dogs
- Experimental Group: dogs that eat the new food
- Control group: dogs that continue with their normal diets
Explanation:
In a scientific experiment, the dependent variable is the variable being tested/measured, while the independent variable isn't changed by the other variables that are being measured during the experimental procedure. Moreover, the experimental group is the group of individuals/subjects that is exposed to the independent variable, i.e., they are exposed to the experimental treatment. Finally, a control group is a group that exhibits the same characteristics as the experimental group but doesn't receive the experimental treatment, thereby enabling comparisons with the experimental group.
Fill in the space where it says hypothesis stated look in the photo I don’t have that much time
The purpose of the experiment is above
Answer:
The hypothesis of the experiment states that the density of a liquid can affect the properties and the way this liquid interacts with others.
Explanation:
In an experiment, the hypothesis is an assumption, that is, it is something that the researcher believes to be true. To confirm this assumption, the experiment must present facts that show that this assumption is correct and true.
In this case, the purpose of an experiment is to confirm a hypothesis. In this case, if the purpose of the experiment is to find out if the density of a liquid can affect the properties and how that liquid interacts with other liquids, it is because the hypothesis of this experiment assumes that the density of the liquid has the ability to modify the properties and the interaction of this liquid with others.
Select all that apply: Meiosis increases diversity in a populations by way of *
Mutation
Independent Assortment
Crossing Over
Random Fertilization
Question:When is water the most dense?
Question:When is water the least dense?
Explanation:
Water density changes with temperature and salinity. Density is measured as mass (g) per unit of volume (cm³). Water is densest at 3.98°C and is least dense at 0°C (freezing point).
What happens when the Earthis plates pull away from each other? What happens when they push together?
Answer:
Two plates pushed together create a convergent fault. If one plate is oceanic and the other continental, the edge of the oceanic plate will be pushed down. When two plates move away from each other they create a divergent boundary. When this happens under oceans, new ocean floor is created.
The two bar graphs show the average temperature and precipitation in a temperate climate, like you might find in most of the U.S.
Imagine you are on a trip to Brazil for the summer Olympics. How might the temperature graph differ in that climate?
Answer:
high temps all year
Explanation:
Answer:
High Temperatures all year!!
Explanation:
3. What type of pesticide is used to kill plants?
herbicides
fungicides
insecticides
rodenticides
Answer:
herbicides
Explanation:
herbicide targets weeds and other unwanted plants
Answer:
I believe the answer is Herbicides.
Explanation:
Herbicides: Chemical used to kill unwanted plants
Fungicides: Generally used to control parasitic fungi that can cause economic damage to crops.
Insecticides: Help control insects in the home garden or landscape.
Rodenticides: Pesticides that kill rodents.
Select one of the ways below that have increased human life expectancy
A. new medicines
B. new cars
C. new types of cell phones
D. New types of stores
Answer:
A. new medicines
Explanation:
New medicines help treat and sometimes cure diseases that wouldn't be treatable 100 yrs ago
Why are only four amino acids produced by 5 codons? I need this answer ASAP
Answer:
My answer (that the information we have about codon structure is limited to the observations we can make now) is similar to the first part of your answer: that the number of amino acids that can be encoded is a function of codon length, in that both imply the (circular) argument that we must need more than 14 amino acids (plus a start and a stop, making 16) because we observe three nucleotide codons rather than two nucleotide codons. It would be nice to have a noncircular argumentf for why the minimum number of distinct amino acids is more than 14, but that is beyond my ability to construct
A, T, C, and G are the only letters found in DNA, however, a protein may include up to 20 distinct amino acids. Codons assist in translating the DNA code into a protein code at this point.
What are genetic codons?For the body to develop and work effectively, 20 different amino acids are required. All 20 of them are crucial for your health, but only 9 are considered to be absolutely necessary.
This is due to the degeneracy of genetic codes, one of their characteristics, the remaining 3 codons are called "stop" codons since they do not code for any amino acids. The sequences UAA, UAG, and UGA include the stop codon information.
Therefore, only 61 of the 64 possible codon combinations code for amino acids.
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Help please true or false
Answer:
false
Explanation:
because it's false
Answer:
The answer correct false called photosynthesis
Which of these is NOT a
supporting function that vitamins
perform in the body of an animal?
A. Help in the regulation of body functions
B. Help keep the body healthy
C. Help with the growth and formation of bones
D. Help in developing resistance to disease
Explanation:
c it's ño c by my opinion and it is sure that
Which of the following is a nonrenewable resource?
O wind power
O geothermal energy
O oil
O solar energy
Answer:
Oil
Explanation:
Since, unlike oil, source like wind, solar, water etc. come naturally we don't and can't replace them but when the viscosity in oil has been used up it must be change to allow the proper functioning of the machine.
The next resource that is a nonrenewable resource is the oil that is present in the third option, as the oil is a fossil fuel that is formed over millions of years and is not renewable on human timescales.
What is a nonrenewable resource?Nonrenewable resources are natural resources that are finite and cannot be replenished or regenerated on a human timescale, and they are formed over millions of years, and their supply is limited, as oil is a nonrenewable resource that is formed from the remains of plants and animals that lived millions of years ago. These were buried under layers of sediment and rock, and over time, heat and pressure caused them to decompose and transform into oil, and the problem with nonrenewable resources like oil is that they are finite, meaning that there is only a limited supply of them.
Hence, the next resource that is a nonrenewable resource is the oil that is present in the third option.
Learn more about this nonrenewable resource here.
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What other body systems are related to the digestive system
The digestive system enlists the aid of the cardiovascular system and the nervous system. Blood vessels of the digestive system widen to transport more blood.
PLS ANSWER, How do the organ systems function together in the human body?
Answer:
it doesn't say the options so I'm what to pick from sorry
Why human beings are complex organism?
Answer:
human beings are complex organism because
humans are made up of billion cells and a lot of system and organ.like blood circulatory system,digestion system and so all
Answer:
Human beings are known to be complex organisms because they are made up of trillion of cell and organ systems that are dependent on each other. Some of the major systems are blood circulatory systems, the skeletal system, the digestive system, the nervous system and the respiratory system. Most of which are grouped into organ systems that have specialised functions.
The cells are organized from the simplest to the complex level in the body of the advanced organisms. These cells make up the tissues and then the organs. There is a division of labour among the cells which enhances efficiency and speed.
Wyjaśnij dlaczego smak słodki jest sygnałem zachęcającym do jedzenia?
Answer:
iaiebroeon3oek2 owodbr
Chromosomes that you inherit from each of your parents that have the same genes on
them (but different alleles) are called
Answer:
Heterozygous
Explanation:
Heterozygous is having two different alleles for a particular gene.
hope this helped :)
a. The logistic equation reflects the effect of density-dependent factors, which can ultimately stabilize populations around the carrying capacity. b. Density-independent factors have an increasingly greater effect as a population's density increases. c. High densities in a population may cause physiological changes that inhibit reproduction. d. Because of the overlapping nature of population-regulating factors, it is often difficult to precisely determine their cause-and-effect relationships. e. The occurrence of population cycles in some populations may be the result of crowding or lag times in the response to density-dependent factors.
Question:
Which of the following is an incorrect statement about the regulation of populations?
Answer:
b. Density-independent factors have an increasingly greater effect as a population's density increases.
Explanation:
A population can be defined as the total number of living organisms living together in a particular place and sharing certain characteristics in common.
Generally, these populations may be divided into a fraction of the population (subpopulation) based on certain factors and reasons.
Population change equation states that the change in the size of a population over a specific period of time is equal to the sum of the number of births and the number of immigrants that joined.
Mathematically, the population change equation is given by the formula;
Population Change = (Natality - Mortality) + (Immigration - Emigration)
Population regulation can be defined as a biological process that balances limiting factors affecting the growth of a population based on density. The factors that regulate the growth of a population are divided into two (2) main categories and these includes;
I. Density-independent factors.
II. Density-dependent factors.
Density-dependent are regulating factors such as predation, diseases, and competition that affect the size of the population of living organisms through decreasing or increasing mortality and birth rate.
Furthermore, density-independent factors do not have an increasingly greater effect as a population's density increases. Thus, its effect are reduced as a population's density increases in size.
what are two function of bile juice
Answer:
It aids in digestion, absorption, excretion, hormone metabolism and other functions. Bile juice is a digestive fluid produced by the liver. It is stored and concentrated in the gallbladder. Its main function is to convert fats in food into fatty acids, which are absorbed in the gut.
Explanation:
(1)The bile juice works as a medium to break down fats from larger parts to smaller parts of body for digestion. (2)The bile juice also functions as a substance that eradicates the germs from the food, making it more hygienic for our body.
What happens to bacterial cells when human genes are inserted
what are the dominant freshwater flora and fauna?
a) grass and insects
b) mangrove trees and fish
c) plants and amphibians
d) sawgrass and reptiles
Answer:
The correct answer is A I believe :)
Explanation:
Which of the following are all abiotic factors?
A. Primary consumers, secondary consumers, and producers
B. Sunlight, precipitation, wind speed, and temperature range
C. Detritivores, herbivores, carnivores, and omnivores
D. Microorganisms and mineral content
Explanation:
Option B is correct as abiotic factors includes non-living factors.
Answer:
B is the correct answer.........
why must heterotrophs eat other organisms
Answer:
to survive
Explanation:
eating=living