2. The endocrine system includes specialized cells that help fight bacteria and viruses.

a. True
b. False

Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes

Which of the following statements is accurate about evolution? question 10 options: natural selection only eliminates odd individuals. evolution means that a population never has changes in its genetic frequencies. mutations are always harmful. evolution means that a population undergoes changes in its gene frequencies over time.

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.