A planee is flying at a speed of 250 miles per hour. How long does it take to fly 250 (show steps)

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

Agroup of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cells? a. the cells would not be able to make food, but would be able to release energy from biomolecules. b. the cells would not be able to replicate dna, but would be able to break down waste. c. the cells would not be able to break down waste, but would be able to replicate dna. d. the cells would not be able to release energy from biomolecules, but would be able to make food.

Support mangrove trees out of the water. a) pneumatophores b) prop roots c) sand dunes d) tide supports