An asteroid hitting the earth would cause a lot of dust, ash, and other debris to go into the atmosphere which would block the sun which would cause the temperature to decrease.
Answer:
A. It is the place where energy is produced.
It stores the genetic information, the DNA (chromosomes).
Explanation:
Also the alimentary canal or digestive tract
Answer:
It is active transport
Explanation:
because the ions are moving against the concentration gradient
Answer:
round worms reproduce sexually
the nervous system of a roundworm contains a brain and nerve cords
