Answer:
the form of a sperm cell helps it to travel apon ejaculation and impregnation of a female.
Carcinogens is a substance capable of causing cancer in living tissue.
Answer is: cancer causing agents
This is a true fact. Majority of seniors' injuries are cause because of falls.
Answer: Alzheimer's affects only individuals over 70 while Parkinson's can strike at any age.
Parkinson's affects primarily the systems in the brain that affect movement while Alzheimer's affects other systems first
