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frutty [35]
2 years ago
12

Scientists believe the inner core of the earth is...

Biology
1 answer:
lorasvet [3.4K]2 years ago
4 0
The answer is C. solid iron and nickel
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_______ labs, perform work with indigenous or exotic agents that may cause serious or potentially lethal diseases through the in
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3 years ago
3/10
tresset_1 [31]

Answer: It's known as the continental drift :)

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3 years ago
How is gene regulation in prokaryotes and eukaryotes similar how is it different?
Triss [41]
Prokaryotes are unicellular (single-celled) organisms and on the other hand Eukaryotes are multicellular organisms and more developed in organ and structure compared to prokaryotes. Gene regulation is key to both organisms as it determines growth and development and other process and activities performed by the organism. However, the two organisms differ in the way they regulate their genes. Prokaryotes cells lack nucleus while the eukaryotic cells have a well defined nucleus. In Prokaryotes RNA transcription and protein formation occur almost simultaneously while in the Eukaryotes RNA transcription occur before the protein formation in the nucleus and then protein formation occurs in the cytoplasm. In addition both organisms uses the same processes in gene regulation  and only differ in the manner the processes are undertaken. Lastly, gene expression in prokaryotes is regulated at transcriptional level whereas in eukaryotes regulation is at many levels.
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3 years ago
Which of these best describes extinction events?
SpyIntel [72]

Answer: D. Extinctions occur at higher rates during times of ecological stress when populations and species are poorly adapted.

7 0
3 years ago
Read 2 more answers
Circular rings of smooth muscle that can contract to regulate the movement of food through the gastrointestinal tract are called
yaroslaw [1]

Answer: Sphincter muscles

Explanation:

The circular rings of smooth muscles, that can contract to regulate the movement of the smooth muscles that can contract to regulate the movement  of food through the gastrointestinal tract are known as sphincter muscles.

These two layers are outer layer and inner layer. The outer layer is longitudinal and the inner layer is circular. They contract rhythmically to squeeze food.

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