How would you explain the reasons for dividing time into four eras? What are the major characteristics of each era? *

Answers

Answer 1

Answer:

Eons, Eras, Periods, Epochs.

Explanation:

Answer 2

Answer:

Explanation:

Here is a brief look at the four periods of the Geologic Time Scale that ... The Precambrian, Paleozoic, Mesozoic, and Cenozoic Eras


Related Questions

During meiosis, homologous chromosomes exchange genetic material. This exchange of
genetic material -

Answers

Answer:

During meiosis, homologous chromosomes may exchange genetic material during a process called "crossing over."

What causes day and night

Answers

earth rotaion so i need points

5. Write the levels of organization in order from MOST SIMPLE to MOST COMPLEX. Use the words: organism, organ, cell, tissue, and organ system. ​

Answers

Answer: The major levels of organization in the body, from the simplest to the most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism

Answer:

cell

tissue

organ

organ system

organism

Explanation:

Cells are most simple, organism is most complex

"________" she said, collapsing with exhaustion. "I'm glad that's over with!"
a Hey!
b Oh, no!
c Phew!
d Wow!

Answers

Option C. Phew!

Have a great day! :)

Which of these choices most accurately describes how particles move in a transverse wave?
A)particles in the medium move perpendicular and parallel to the direction of the waves
B)the particles in the medium move perpendicular to the direction of the waves
C)the particles in the medium move parallel to the direction of the waves
Or D) particles in the medium move in a circular direction around the wave.

Answers

I’m pretty sure it’s B.
I’m pretty positive that it is B


An object with a kinetic energy of 200 J and Potential energy of 300 J, has a mechanical energy of what?

Answers

Answer:

500 J

Explanation:

Emechanical=U+K,i.e., the mechanical energy Emechanical is the sum of the potential energy U and kinetic energy K.

So, the object has a mechanical energy of 200+300=500 J.

Which of the following organisms is a producer?

A. Alligator
B. eagle
C. Sunflower
D. Fish​

Answers

Answer:

C

Explanation:

Sunrflower is plant

Answer:

C. Sunflower

Explanation:

As we know that plants are the producers hence here in the given options Sunflower is the appropriate answer.

how does a plant cell look under a microoscope

Answers

Plant cell under the microscope

The structure and shape of the cell are more rigid when compared to animal cells as plant cells have a rigid cell wall that provides a more solid structure to the plant cell. The shape of the plant cell is usually rectangular in shape even though some plant cells have a triangular shape.

i hope it helps you:-):-)

Use evidence from the maps to answer the Investigation Question: Why do different locations have different air temperatures?
Try to use the following words in your response: energy, temperature, and latitude.

Answers

Answer:

hope help you stay happy and safe

When the Earth moves, the angle at which sunlight hits different places on Earth at the same time of day changes because the Earth is tilted.

What is Earth rotation?

Earth's rotation or Earth's spin is defined as the rotation of the planet Earth around its axis as well as the change in the orientation of the axis of rotation in space. When viewed from Polaris, the north pole star, the Earth rotates in the east facing east, the Earth rotates counterclockwise.

When the heading of the particular place is towards the Sun, there is warm temperature which is called as the summer when the heading of the same place is away from the Sun, there is cold temperature which is called as the winter.

Thus, when the Earth moves, the angle at which sunlight hits different places on Earth at the same time of day changes because the Earth is tilted.

Learn more about Earth's Rotation, here:

https://brainly.com/question/16455426

#SPJ2

Tom described a certain phase in mitosis as follows: The centromere splits. The paired chromosomes separate and shift to the opposite sides of the cell, which stretches the cell. Which of the following phases will take place just after the phase described by Tom?

Anaphase
Metaphase
Prophase
Telophase
!!!PLEASE HELP!!!

Answers

Answer:

I'm not 100% sure, but I think its the Telophase.

Explanation:

The third phase of mitosis is called anaphase. This is when the separation starts. The centromere of each chromosome splits. The spindle fibers shorten and pull the sister chromatids apart until they are on opposite ends of the cell. Each chromatid is now a single, unreplicated chromosome. As a result of this, the cell stretches out. The phase after this is telophase.

Answer:

Ik I'm late but Telophase

Explanation:

took the quiz and got it right  

Name three elements used to date fossils with absolute dating

Answers

Answer:

Among the best-known techniques are radiocarbon dating, potassium–argon dating and uranium–lead dating. By allowing the establishment of geological timescales, it provides a significant source of information about the ages of fossils and the deduced rates of evolutionary change.

Explanation:

- Eijiro

Please help on this

Answers

Answer:

Phylum

Explanation:

Just look for the one word that's repeated throughout all 4 animals' column, then look to the left and pick the taxon it belongs to.

Phylum is your anwser

Think of an object, person place at home that functions similar to the vacuole.

Answers

Annswer:

a egg

Explanation:

This is the answer because vacoules are like cells and eggs are like cells and yeah.

Sorry about the explanation I have to get points. But here are comparisons between the 3.

In a cross between two heterozygous tall and purple flowers (TtPp x TtPp), what would the
ratio be?

Answers

Answer:

9:3:3:1

Explanation:

This question involves two different genes coding for height and flower color respectively. The first gene posseses allele T (dominant) and t (recessive) while the second gene possesses allele P (dominant) and p (recessive).

According to this question, two heterozygous tall and purple flowers are crossed i.e. (TtPp x TtPp). Each parent will produce the following gametes combination:

TtPp - TP, Tp, tP, tp

Using these gametes in a punnet square, the following proportion of offsprings will be produced:

T_P_ (tall, purple) = 9

T_pp (tall, white) = 3

ttP_ (short, purple) = 3

ttpp (short, white) = 1

Hence, the ratio of this cross is 9:3:3:1

18. What is precipitation that falls on land and flows over the surface of
the ground?

Answers

Think that would be called Run off.

1. What is true of two organisms that are in the same phylum?
A. They are likely the same species too.
B. They are more closely related than two organisms who are the same genus.
C. They are more closely related than two organisms who are in the same order.
D. They are less closely related than two organisms who are in the same class.

Answers

Your answer would be C
The answer would probably be B :) hope it helps

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Answer the question and then find key word(s) from the question that helped you get the answer.

Answers

D D it’s D mhm it’s D

What are some examples of natural hazards that can occur quickly with little or no warning?

Answers

1) Earthquakes
2) Volcanic eruptions
3) Flash floods
all occur with little warning but happen fast

Answer:

landslides

Explanation:

Thunder storm

Wildfire

Eruption

ASAP: Fill in the Genotype of each family member in
the blue boxes.

Earlobes are Autosomal Recessive.

Answers

top left circle- ee
top right square- Ee
bottom two are- ee
(the letter does not have to be “e,” you can change it and label it to whatever but make sure the uppercase and lowercase stay the same

What does Mufasa mean by the circle of life? Make a diagram that shows the circle of life. Represent it this way: sun –> producer –> primary consumer –> secondary consumer-> decomposer

PLEASE HELP

Answers

Answer:

Sun --> carrot --> rabbit --> wolf --> earthworm

Why do radio telescopes tend to produce blurry images? ASAP

Answers

Answer: When light passes through an opening it will dissfract. The smaller the opening, the blurrier the image will be

Explanation:

How does the mutated protein differ from the original protein?

Answers

A mutant protein is the protein product encoded by a gene with mutation. Mutated protein can have single amino acid change (minor, but still in many cases significant change leading to disease) or wide-range amino acid changes by e.g. truncation of C-terminus after introducing premature stop codon.

What is protein? ... Most animal sources of protein, such as meat, poultry, fish, eggs, and dairy, deliver all the amino acids your body needs, while plant-based protein sources such as grains, beans, vegetables, and nuts often lack one or more of the essential amino acids.

In humans, the "A" allele codes for Type A blood, the "B" allele codes for Type B blood, and the "o" allele codes for Type O blood. "A" and "B" are both dominant to "o." A and B are codominant to each other.

What is the genotypic ratio of a cross between a mother who is heterozygous Type A and a father who is heterozygous Type B?

A. 1 AB : 1 A0:1 Bo : 1oo

B. All AB

C. 2 AA: 2 BB

D. 1 Ao: 2 00:1 Bo​

Answers

Heterozygous means having two different alleles.
The A allele and B allele are dominant. This means that they will be the main allele to express itself. If someone has an A and an o allele, which is recessive, the A allele would express itself over the o allele. A and B are codominant - meaning that if someone had both A and B alleles they’d have type AB blood, as they’d both express.

The mother is heterozygous type A - that means she has one A allele and one o allele
The father is heterozygous type B - meaning he has one B allele and one o allele. I know that it is Bo because if it was BA then he’d have type AB blood because the A and B alleles are codominant.

The genotype ratio is a ratio saying what the chances are of having one type of something (ex blood type, eye color) given the alleles of parents. To find this out make a punnet square with A o on top and B o on the side. Fill it in. I’ve attached a pic of what it will look like.

As you can see 1/4 is AB, 1/4 is Ao, 1/4 is Bo and 1/4 is oo. So the ratio will be letter A: AB:Ao:Bo:oo

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Answer the question and then find key word(s) from the question that helped you get the answer.

Answers

Answer: I think it’s b

Explanation:

The answer is b
..................:.....

11. Which of these claims is most likely true of two species that share a recent common ancestor?
A. The two species have different developmental patterns.
B. The two species share DNA sequences.
C. The two species have similar arms and legs.
D. The ancestors of each species looked very different.

Answers

Answer:

B. The two species share DNA sequences.

Explanation:

Although we can use all of these, DNA supports the determination of common acestory the best.

HELP! Label the image of the DNA with the correct name of the part!

Answers

Answer:

The top is Phosphate

The orange is Deoxyribose Sugar

The green is Adenine

The blue is Guanine

I dont know the red one sorry

Explanation:

helppppp meeeeee plsssss

Answers

Answer:

Solar eclipse

Explanation:

Solar  eclipse happens when the moon is covering up the sun. As the picture is showing, the moon is covering up the sun and casting a shadow onto the earth.

define polymer

simple

Answer ASAP​

Answers

Answer:

A polymer is a bunch of monomers put together in simplest terms.

A bunch of what the person said above

How many MYA was the mass extinction of dinosaurs, ammonoids, and many land plants?

Answers

The Cretaceous–Paleogene (K–Pg) extinction event (also known as the Cretaceous–Tertiary (K–T) extinction) was a sudden mass extinction of three-quarters of the plant and animal species on Earth, approximately 66 million years ago.

Where do sperm go after leaving the vas deferens?  A. Seminiferous tubules  B. Urethra  C. Vas deferens  D. Ejaculatory duct

Answers

D. ejaculatory duct
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