Why do all plant cells contain chloroplasts? A
Chloroplasts are necessary for cellular respiration.

B
Chloroplasts are necessary for photosynthesis.

C
Chloroplasts are necessary for reproduction.

D
Chloroplasts are necessary for growth.

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

What is used to keep track of the gamates and possible offsprings combination

Describe characteristics of a good respitory surface