Answer:
Muscles contract rapidly to produce heat on a cold day.
Explanation:
Answer: Producers
Explanation: Producers are autotroph, which means they make their own food, like plants.
Answer:
B
Explanation:
An undifferentiated cell is such as that in a blastocyte. They are multipotent and can differentiate into any type of cells. The cells of the mass begin to have their gene differentially expressed (due to differential silencing of particular genes) hence the cell become determined. They become well organized into tissue such as skin and other organs.
Answer:
The smooth endoplasmic reticulum
Explanation:
Hope this helps :)
<span>cohesion and adhesion = capillary action
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