1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natta225 [31]
3 years ago
12

What happened around 800 million years after Earth formed to allow rocks to form?

Biology
2 answers:
TiliK225 [7]3 years ago
8 0

Answer:

metamorphic rocks, igneous rocks and sedimentary rocks

Explanation:

metamorphic rocks are made by lots of heat and pressure from the earths crust where they are found. igneous rocks are made by volcanoes from the magma when it cools.  sedimentary rocks are made by years and years of sediment coming together and hardening.

Ipatiy [6.2K]3 years ago
8 0

Answer:

earth cooled sufficiently.

You might be interested in
"Mendel knew that the allele for smooth (R) seeds was dominant over the allele for wrinkled (r) seeds. If this cross was Rr × rr
s344n2d4d5 [400]

Rr and rr in the ratio of 1:1

Explanation:

If allele for smooth seed is Dominant over the allele for wrinkled seeds, and they are crossed 50 per-cent of the progeny will be heterozygous dominant  and 50 per-cent will be homozygous recessive.

Rr  X  rr

Rr Rr rr rr  F1 generation.

     r      r

R    rR   rr

r     Rr   rr

From Punnet square it will be 50 per-cent  chance each of rr and Rr.

3 0
3 years ago
What component of a Red Blood cell is lacking if the red blood cell is a light red?
dem82 [27]

Answer:

hemoglobin

Explanation:

Cytoplasm of RBCs contain large amount of hemoglobin which contain iron binds to haem group. it carry and transport oxygen from lungs to all parts of body and return carbondioxide back to the lungs from the different tissues.

Normal level of hemoglobin for men= 13.5 to 17.5 g/dl and for women =12.0 to 15.5 g/dl

Low level of hemoglobin is the indication of anemia

7 0
3 years ago
1. An organism that makes their own food to obtain energy is called an-
olga nikolaevna [1]
The answer would be AUTOTROPHIC
5 0
3 years ago
What does the D in DNA stand for
Vika [28.1K]

Answer:

Explanation:deoxyribonucleic

3 0
3 years ago
The earth's topography means its surface features.<br><br>True <br><br>False <br>​
Cerrena [4.2K]

Answer:

<h3>True</h3>

Explanation:

Topography is a detailed map of the surface features of land.

6 0
3 years ago
Other questions:
  • Which is not an echinoderm? <br><br>A) sea star <br>B) sea urchin<br>C) sand dollar<br>D) spider
    10·2 answers
  • Which of the following are products in a neutralization reaction? Check all that apply. A. A salt B. Water C. A base D. An acid
    5·1 answer
  • In which phase of the eukaryotic cell cycle do microtubules arrange in preparation for mitosis? answer cytokinesis, g1 phase, g2
    15·1 answer
  • What kind of relationship would a mouse and a rabbit have
    10·1 answer
  • The bonds formed when electrons are shared is called a(n)?
    6·2 answers
  • How do electromagnetic waves travel
    9·2 answers
  • give an example of a density independent limiting factor that has affected a human population and describe how this factor chang
    10·1 answer
  • How is Gaucher disease treated?
    5·1 answer
  • Gluconeogenesis is a form of ___. Select one: a. metabolism b. catabolism c. anabolism d. hydrolysis
    13·1 answer
  • In a mass extinction, many species become extinct at the same time. scientists have concluded that a mass extinction killed the
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!