The geological time scale/species scale is divided into different units of time depending on changes in the rocks and fossils. So the statement is true.
What is the geological time scale?
The lengthy period of time that the Earth's geologic history has taken up is known as geologic time. Starting at the beginning of the Archean Eon (4.0 to 2.5 billion years ago), formal geologic time runs to the present.
The Hadean Eon, an informal time period that runs from around 4.6 billion years ago (corresponding to Earth's first creation) to 4.0 billion years ago, is also frequently included in modern geologic time scales. The period of Earth's history that is reflected by and preserved in the planet's rock layers is known as geologic time.
Events throughout Earth's history are "calendared" according to the geologic time scale. It divides all of the time into named units of abstract time known as eons, eras, periods, epochs, and ages, in declining order of duration. Those geologic time units are counted according to stratigraphy, the correlation, and the categorization of rock layers.
Therefore, the geological time scale is used for dividing different units of time according to changes in rocks and fossils. Hence the statement is true.
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What is Chargaff's Rule?
Answer:
Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine. This pattern is found in both strands of the DNA.
How does the number of valence electrons in sodium (Na) compare to the number of valence electrons in calcium (Ca)? A. Na has two fewer valence electrons than Ca. B. Na and Ca have an equal number of valence electrons. C. Na has one more valence electron than Ca. D. Na has one fewer valence electron than Ca.
Answer:
D. Na has one fewer valence electron than Ca.
Explanation:
Elements in different groups has been grouper based on the number of valence electrons they possess. Valence electrons refers to the electrons at the outermost part of the shell of an atomic element.
Sodium (Na) belongs to group 1 on the periodic table meaning that it has one number of valence electrons while Calcium (Ca) belongs to group 2 meaning that it has two number of valence electrons. Hence, Na has one fewer valence electron than Ca.
A student observes the model and claims that the total mass of the reaction is conserved. Is the student's claim correct? Why or why not? A No, because the arrangement of atoms is different in the reactants and products. B Yes, because the reactants and products are made of atoms of the same elements. C Yes, because the number of atoms of each element is the same on both sides of the equation. D No, because the total number of atoms in products is greater than the total number of atoms in reactants.
C. Yes, because the number of atoms of each element is the same on both sides of the equation.
Due to the law of conservation of mass, any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.
hope this helped!
which statement about enzymes is true?
A. An enzyme functions to decrease the rate of a chemical reaction.
B. Enzymes are proteins that function as catalysts in nonliving things.
C. Each enzyme can catalyze many different biochemical reactions.
D. Enzymes and substrates fit together like a lock and key.
Answer:
d
Explanation:
a is wrong as enzymes function is to increase the rate of a chemical reaction.
b is wrong as enzymes are proteins that function as catalysts in living things
c is wrong as each enzyme can catalyse a single reaction as they all have an unique pattern
hope it helps...
Which statement is NOT true about fluids?
A. all can flow
B. liquid and gases are included
C. some take the shape of their container
D.particles move easily past each other
Answer:
option D is correct
Explanation:
The statement which is not true about fluids is particles move easily past each other.
What do you mean by Fluids?Fluids may be defined as any liquid or gas or generally any material that experiences a continuous change in shape when subjected to any object.
The properties of fluids indicate that all fluids can flow depending upon their densities. Some take the shape of their container due to fluidity. Fluids comprise liquid and gases.
Therefore, the statement which is not true about fluids is particles move easily past each other.
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Which is a disadvantage of asexual reproduction?
Answer: The major disadvantages of asexual reproduction are: Lack of diversity. Since the offsprings are genetically identical to the parent they are more susceptible to the same diseases and nutrient deficiencies as the parent. All the negative mutations persist for generations.
Hope this helps... Stay safe and have a great day/night!!!! :D
Angiosperms are the most common plant that you see every day. Describe what characteristics make them so successful.
Answer:
1. they are the most complex green flowering plants
2. they are vascular plants
3. they have well developed and complete flower
4. they are mainly terrestrial plants
5. they are seed plants with seed enclosed in the fruit
Explanation:
hope this helps
Which of the following terms describes the following:
a device that converts electric energy into thermal energy
A heating appliance
B windmill
C transistor
D generator
Answer: heating appliance
Explanation:
John is completing an internship in biology at the Clearwater Marine Aquarium. While interning there, he monitors an outdoor phytoplankton exhibit to observe how populations of phytoplankton change when exposed to light. It is observed that each year the phytoplankton population within the exhibit increases when it was exposed to high amounts of sunlight. A new apartment complex that overlooks the aquarium is being built. The phytoplankton that were receiving 8-12 hours of sunlight each day will now have between 2-5 hours of sunlight. How will the phytoplankton be affected by the new apartment building?
Answer:A
Explanation:
It will decrease over time
Question 5 of 10
Psychiatrists and psychologists often refer to a manual that details different
mental disorders. Although it is controversial, it is still used by almost
everyone. This manual is called the:
A. TAT
B. SPT.
C. DSM
D. REM.
Answer: C
Explanation:
Answer: DSM
Explanation:
who was the crazy little man who came up with continental drift ??
Answer: Alfred Wegener
Alfred Wegener: The Father of Continental Drift
Explanation:
16. Which phenomenan shows the effect of light dispersion? *
I need help asap!! Please
It’s due in a little bit
Answer:
explain please????!??????!
Please help me need this before 4:30pm
Atomic Number = the number of __________________________ in an atom.
Answer:
the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
Explanation:
PLEASE HELP ME !
When did whale ancestors begin living full time in the water?
A) before they nursed under water
B) after they began eating a carnivorous diet
C) before they evolved gills
D) after they lost their hind legs
Answer:
40 million years ago
The earliest whales that we think were fully aquatic, that is, they never left the water, are found around 40 million years ago, during the middle Eocene. That means that the transition from terrestrial animals to fully aquatic animals took about 12 million years.
Explanation:
Answer:
After they nursed under water
Explanation:
What is one of the roles of the enzyme, DNA Polymerase, during DNA replication?
Answer
F
It degenerates (breaks down) the old DNA strand once the new strand is made
G
It uses a strand of DNA to build a new strand of RNA
H It joins nucleotides to synthesize a complementary strand of DNA
J
It unzips the two strands in a molecule of DNA to begin replication
Answer:
H
Explanation:
Couldn't find my notes for this, but research says H- it builds a complimentary DNA strand
Why is ATP production Constant?
this is all from a crossword puzzle Across
7. Organisms which make their own chemical energy.
8. Long whip-like tail, used for locomotion.
9. Organisms which need oxygen to survive
10. Attachment points for bacteria
12. Small organelles involved in making proteins.
13. Name for true, modern bacteria.
14. Name for "squiggly" shaped bacteria.
15. Small circular segment of DNA. Often exchanged
between bacteria.
16. Photosynthetic bacteria containing chlorophyll a &
b.
Down
1. Organisms which obtain energy by consuming organic
material.
2. Structures which bacteria form to endure adverse
situations.
3. Name for all contents of a cell, except for nucleus.
4. Ancient bacteria often found in harsh environments
5. Name for rod-shaped bacteria.
6. Name for round shaped bacteria.
7. Organisms which do not require oxygen to survive.
11. The act of two bacteria joining and exchanging DNA.
Answer:
7.autotrophs
8flagella
9.aerobe
10.pilus
12ribosomes
13 Eubacteria
14Spirillia
15Plasmid
16 photoautotrophic
1.heterotrophs
2endospores
3 cytoplasm'
4archeabacteria
5bacilli
6cocci
7anaerobec
11 conjugation
Explanation:
Which of the following is the most important reason to maintain a high level of cardiovascular health?
A. A higher level of fitness makes it easier to develop larger muscles.
B. A higher level of fitness makes you more attractive to other people.
C. A higher level of fitness allows you to live a longer, healthier life.
D. A higher level of fitness improves your IQ.
Answer:
C
Explanation:
I think because the more healthier you are, the longer you'll live
The person tries to spear the fish but he always misses. Why?*
Answer:
because of bad coordination
Explanation:
.......
a partial food web is show below
Answer:
a the red tail hawk has no natural predators so it will increase so a
Answer:
The butterfly pop. will increase
Explanation
If there are less grouse, then the butterflies will not have any predators
In a strand of DNA, if the percentage of thymine is 30%, what would the percentage of cytosine in the same DNA strand be?
Answer: 20%
Explanation:
I haven't learned this exactly yet, but if there is 30% of thymine, then there has to be 30% of adenine because they match. That would leave 40% for other Guanine and Cytosine, and since they also match that means that it is exactly half, meaning that there is 20% Guanine and 20% Cytosine.
should a business owner be more interested in making money or doing what they are passionate about?why?
Answer:
passion
Explanation:
a business owner should be interested in doing what they are passionate about because if they like something they will make more money and more customers will be attracted to their new project
Please help a kiddoe out I will mark brainliest
Do you think the genetic disorders you identified in part A or B would appear in a person’s DNA fingerprinting profile? Explain your reasoning.
Answer:
Yes, I think genetic disorders would appear in a person's DNA fingerprint profile. It would appear because everyone has a variation in their DNA and genetic disorders show up in DNA, so it would appear in a person's DNA fingerprint profile.
Explanation:
If we want to investigate bacteria, we're going
to have to figure out how to keep them alive. If
we were doing this experiment in class, how
would keep the bacteria we find alive when we
bring samples back to our classroom?
Answer:
in a container with a lid
Explanation:
the lid would keep it aliveand keep in a refrigator
help please it’s due today and i dunno what to do.......
Answer:
I don't know if I understood that completely, but I think that there will be more liquid water if the temperature gets higher.
Explanation:
We currently have the ice caps, those are just ice. If they melt then they will be a liquid. there might be more gas, but it is mostly ice right now.
9. Which is not associated with areas of karst topography? A caverns B sinkholes C flowing rivers D sinking streams
Answer:
It's A ) Caverns
Explanation:
Just Had This Quiz And Got It Right! Brainliest?
1. How did Hooke's work contribute to the cell theory?
Answer:
He looked at thin slices of cork through his microscope and discovered little tiny "cells," which he named because he described the plant cells as resembling the cells where monks lived. He then developed this discovery into cell theory.
What are the cell types of these structures? 20 points and marked brainliest
Nucleus
Nuclear Envelope
Nucleolus
Ribosomes
Cytoplasm
Plasma Membrane
Cell Wall
Prokaryote
Eukaryote
Rough ER
Smooth ER
Golgi Apparatus
Vacuoles
Lysosomes
Chloroplasts
Mitochondria
Cytoskeleton
Microtubules
Microfilaments
Flagella
Cilia
AGAIN PLEASE NAME THE CELL TYPES!!! 20 POINTS AND MARKED BRAINLIEST!!
Answer:
Although cells are diverse, all cells have certain parts in common. The parts include a plasma membrane, cytoplasm, ribosomes, and DNA.
John and Sarah had a child born with cystic fibrosis, a genetic disease. Both John and Sarah were normal, showing no signs of this disorder. How is it possible for them to have a child with this disease?
a. Cystic fibrosis must be a dominant trait disorder hidden in both parents' genotype, but not showing in the phenotype, that could be passed on to offspring.
b.Cystic fibrosis must be a recessive trait disorder hidden in both parents’ genotype, but not showing in the phenotype, that could be passed on to offspring.
c. Cystic fibrosis must be a dominant trait disorder hidden in one parents’ genotype, but not showing in the phenotype, that could be passed on to offspring.
d.Cystic fibrosis must be a recessive trait disorder hidden in one parents’ genotype, but not showing in the phenotype, that could be passed on to offspring
Answer:
B
My logic:
I did a whole project on genetics and i love genetics. I know for a fact this is the correct answer because i had it 2 years ago on a test and got it correct. On the off chance im wrong, it has been 2 years and i might have mixed my facts up.
Hope this helps!
Answer:
it is b
Explanation:
reccesive doesn show in the phenotype because its covered by the dominant trait so the parents were fine but it is both parents so that the kid has an rr and not Rr or RR so that the reccesive trait would be covered by the dominant in the phenotype so B