Which structures are part of the body's first line of defense against pathogens?

A.

white blood cells

B.

red blood cells

C.

lymph nodes

D.

mucous membranes

Write short note on distribution of water in India

Is natural selection a fact or theory

What statement is true about adaptive evolution

What happens to the growth of a population when resources are unlimited

What are the implications for everyone if we dont have antibiotics to treat infections? answer for brainliest!

Karen has type 1 diabetes, and she often forgets to administer insulin to herself. why does her breath usually have a fruity odor?

3. In the Phylum Porifera, the highest level of organization is arguably only at the cellular' levél. How have the cnidarians become more complex in terms of organization? What does this mean?

Explain the biological process that enables the roots epidermal cells to do this

Which term describes when individuals leave more offspring than other individuals?

Which of the following traits would be least useful in a phylogenetic analysis? A) A trait that is altered easily by small changes in temperature B) A trait that involves genetically inherited behaviors C.