What is the predominant hypothesis why animals only appeared in the fossil record about 3 billion years after life originated?

What are three effects that an increase in urbanization can have on air quality

Hans was locked in a large closet for the first four years of his life. A caretaker would bring him food and water and an occasional clean blanket. When Hans was rescued, how would his brain compare to that of a child raised in normal circumstances

In what way are family, religion, health care, politics, and mass media alike?

What do you think happens to a fish's behavior in cold climates during winter explain

In humans, cystic fibrosis is a recessive genetic disorder that results in mucus clogging major organs. If both parents are genetically heterozygous for cystic fibrosis, then what are their chances of having a child with the disease?

An organisms ability to maintain its proer condition

1 Chromosomes move to the middle of the cell during what phase?

A change in a gene due to damage or incorrect copying is called a evolution. c. segregation. b. meiosis. d. a mutation.

The risk of injury in a car accident is much greater if occupants do not wear a seat belt. Wich of newton's laws explains why this is true? A. Law of inertia B. Law of force and acceleration. C. Law of action-reaction D. Law of gravity

Why does the United States experience winter during the months of November through early March