Answer:

Explanation:
B-cells engulf an antigen by endocytosis.
<u>Endocytosis:</u>
The process by which cell takes up external materials by fusing them with plasma membrane is called endocytosis.
After engulfing the antigen, B-cells become sensitive to the pathogen.
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Hope this helped!
<h3>~AH1807</h3>
The answer is D,
<span>A. do not want the genes to become worn out.
B. cannot control the translation of proteins.
C. do not carry the complete genetic code in their nuclei.
D. do not need the proteins that are specified by certain genes.
Have a wonderful day! :D</span>
Answer:
Explanation:
The greenhouse effect describes Earth's heat-reflective layer caused by atmospheric gases including carbon dioxide, methane and nitrous oxide. ... gases in the atmosphere absorb that heat, bouncing some back to the Earth's surface and ... (22,800 times the global warming potential of carbon dioxide), and water vapor.
Yes you are correct the slope
Peristalsis is what moves the food in the digestive system