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ExtremeBDS [4]
3 years ago
5

PLEASE HELP!!!

Biology
1 answer:
VikaD [51]3 years ago
5 0
The answer is A: Mass extinction.

"Abrupt disappearance of many land and marine species" = extinction of many species.


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The most electronegative atoms typically present in biological molecules are ____ and ____.
Lapatulllka [165]
<span>The most electronegative atoms typically present in biological molecules are O and N.
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3 years ago
Which of the following is a true statement about sexual vs. asexual reproduction? A. Asexual reproduction, but not sexual reprod
Afina-wow [57]

The correct answer is: B. In sexual reproduction, individuals transmit half of their nuclear genes to each of their offspring.

The main difference between sexual and asexual reproduction is that in sexual reproduction genetic material from two parents is combined, while in asexual reproduction produced offspring is genetically identical to the one parent. So, advantage of sexual reproduction is that produced unique organisms contribute to genetic diversity (variation is formed). But, comparing to asexual reproduction, sexual reproduction requires more energy and lasts longer.

Asexual reproduction is found in lower organisms and can be in different forms: budding, vegetative reproduction, fragmentation, spore formation.

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How do scientific models provide a practical solution for some types of research? Check all that apply.
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Option B, D and E.

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Models are very simplified representations of complex systems and organs or structures which are prepared to study those systems by scientists and normal people easily. Many structures of human body like cells or some tissues are very small in structure or microscopic in nature. So studying them are very hard without specific instruments which are not always available. Thus models are made to easily study those structures by scientists and even normal people and students.

3 0
3 years ago
What do these four types of molecules have in common? A carbohydrates B proteins C lipids D nucleic acids
Luden [163]

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biological macro-molecules

Explanation:

4 0
3 years ago
Where does the rhinoceros fall in the food chain?​
Blababa [14]

Answer:

The role of rhinos in the food chain is to act as a primary consumer, since they are herbivores that eat nothing but plants and grasses

Explanation:

I looked it up :D

8 0
3 years ago
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