Answer: A or C
Hope it helps
Answer:
White Blood Cells
Explanation:
White blood cells are primarily responsible for protecting the body from infection. There are many different types of white blood cells. Some white blood cells are phagocytic and engulf invaders. Others produce antibodies that attack foreign substances or mark them for killing.
The answer should be letter B I'm sorry if not
The adaptations of organisms in a specific ecosystem are clues of evolution. for example, a giraffe has a long neck to reach leaves of high trees, birds migrate when cold weather comes etc
Answer:
it depends what kind of energy your taking about, like human energy or nonrenewable energy. If it is human energy then the option c, but if it is nonrenewable energy than b.
Explanation:
the other options aren't very logical