The type of b cell which remains in the body after an invasion is over is called a
1 answer:
Answer:
memory cells
Explanation:
to fight the reoccurrence of the invasion
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A molecule if thats part of your options i don't have any options to go off of
Answer:
B
Explanation:
its right
X is mathematically an unknown.
Answer:
Increased fossil fuel use has increased atmospheric carbon dioxide.
Explanation:
Burning fossil fuels increases the amount of CO₂ in air, which is unhealthy.
They concluded that horses evolved with the emergence of grasslands and an increase of predators. The digits of their early Eocene ancestor evolved into hooves.