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zhenek [66]
3 years ago
13

To be a useful index fossil, the organism should have been rare when it lived on Earth.

Biology
1 answer:
MrRissso [65]3 years ago
4 0
True because of the fact that index fossils help correlate and date from its origin and date of existence. basically, it is a fossil that is kept and annalized. 
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The pulmonary circulation conveys blood that is ______ in oxygen to the lungs before returning back to the ______ side of the he
Oduvanchick [21]

The pulmonary circulation conveys blood that is low in oxygen to the lungs before returning back to the left side of the heart.

<h3>The pulmonary circulation</h3>

The circulatory system is divided into two main parts namely:

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The pulmonary circulation involves the movement of blood between the lungs and the heart.

Blood from the systemic circulation returns to the right side of the heart where it is pumped through the pulmonary artery into the lungs to be oxygenated.

After oxygenation has taken place in the lungs, the blood returns to the left side of the heart through the pulmonary veins.

Learn more about systemic circulation here:

brainly.com/question/811428

3 0
2 years ago
PLEASE HELP!!!!!
KATRIN_1 [288]
The answer is B, sameness
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3 years ago
What is the difference between archaebacteria and eubacteria
igor_vitrenko [27]

Answer:

Archaebacteria are often found in harsh environments, whereas eubacteria may be found wherever on the planet's surface.

8 0
3 years ago
The process of DNA replication is described. Identify the enzyme that participates in each part of the replication process. DNA
Kazeer [188]

Answer:

Helicase

Explanation:

DNA replication is the process in which DNA makes copies of itself.

The process of DNA  replication is supported by several enzymes.

The initial step of DNA replication is unwinding of double stranded DNA which is catalyzed by helicase enzyme. Helicase enzymes breaks the hydrogen bond between the  DNA strands and prepare them for replication process.

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The model above shows a cell moving a substance into the cell using a protein to facilitate the transport. Which
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Answer:

what model?

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