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
bearhunter [10]
3 years ago
5

Select the correct statement about current hypotheses for the cause of the Cambrian explosion.

Biology
1 answer:
Pachacha [2.7K]3 years ago
6 0

Answer:

A. Oxygen levels reached a critical threshold at the start of the Cambrian explosion, making the evolution of big, mobile animals possible.

Explanation:

The Cambrian explosion was an event that happened approximately 541 million years ago and it lasted for about 13 – 25 million years.

The current hypothesis for the cause of the Cambrian explosion is that oxygen levels reached a critical threshold at the start of the Cambrian explosion, making the evolution of big, mobile animals possible.

Option A. is correct.

You might be interested in
Please answer this i'll give you brainliest
Rainbow [258]

Answer:

sorry if my answer is incoplete.

5 0
3 years ago
Read 2 more answers
Why do some scientists now argue a pushing, not a pulling, is behind the Atlantic’s slow expansion?
soldier1979 [14.2K]
Because the land masses are getting closer not further apart
6 0
3 years ago
33. It is possible to alter the weather on a small scale. <br> A- True <br> B- False
pantera1 [17]
A- true. Think about it, example: when you burn plastic, and as it’s burning the fire turns blue, and then as it disintegrates, but contaminates the air. If people continue to burn plastic and other things that are bad for the earth and weather,
It could possible alter it!
8 0
3 years ago
What is the common name for the area of the body that corresponds to the cervical spine?
enot [183]

The cervical spine is the top part of your spine ... the part that goes down through <em>your neck.</em>

(Trust me.  I've had cervical spine surgery twice, and the scars are both on my neck.)  

7 0
3 years ago
Give two ways in which the products of digestion can be used by the body.
Elodia [21]

Answer:

The products of digestion can be used for energy, growth, and cell repair.

Explanation:

Glucose which is the by product of carbohydrates is used in respiration to provide energy.

Amino acids are used to build new proteins in the body and also help in the synthesis of hormones and neurotransmitters.

7 0
3 years ago
Other questions:
  • The number of trout in a lake drops when the lake is polluted. The trout population later increases, but the allele frequency is
    12·2 answers
  • Are Pleurococcus and Chlorella <br> Unicellular or Colonial? Explain pls....
    6·1 answer
  • A certain type of hummingbird is known to have an average weight of 4.55 grams. a researcher wonders if hummingbirds (of this sa
    15·1 answer
  • 9. In a freshwater ecosystem such as a lake, a fish has worms that live in its gut
    14·1 answer
  • Which energy transformation occurs in the core of a nuclear reactor?
    8·1 answer
  • An enzyme known as amylase is found in the saliva of humans. This enzyme helps to begin the process of digesting starch molecule
    10·1 answer
  • Which best describes a possible negative impact of irrigation of farmland?
    11·2 answers
  • Theoretical element “A” has four isotopes. Use the data in the table to calculate the average atomic mass of the unknown element
    14·1 answer
  • Hey can somebody plz answer this two
    7·2 answers
  • How do I NSTANTANEOUS speed and average speed differ
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!