Rough endoplasmic reticulum contains ribosomes, while smooth endoplasmic reticulum does not contain ribosomes. The ribosomes are what give rough endoplasmic reticulum its characteristic "roughness."
Answer:
Troposphere.
Explanation:
Humans live most of their lives in the troposphere atmosphere.
Answer: Does the black sqaure represent disease? If so, emma is #1. As for the others i think i need more context
Explanation:
A is the sun hope this can help
Prepares to divide and the DNA is replicated