In what grade do you take biology

I took it in 6th grade, just wondering

How 2 is the correct answer? I need to know the explanation

Thinking about the patients who seem to have the same illness, what did they have in common that would cause the "same illness"?

Emily is a 25-year-old asian female. emily is complaining of frequent headaches over the past 3 weeks. emily is taking birth control pills and smokes one package of cigarettes a day. she also complains of light sensitivity, nausea, and vomiting.

Which part of the nervous system would carry messages from a person's sore knee to alert him or her to stop running and rest?

For dating what kinds of Geologic samples containing uranium is 238U most useful? Why?

Which of these characteristics is common only at the embryonic stage of fish and humans, and is suggestive of a common ancestor between the two? A) presence of lungs B) presence of a tail C) presence of gill slits D) presence of a vertebral column

The purpose of oxygen in the body is to serve as the

How do somatic and inherited mutations differ? A. Somatic mutations exist in all cells in the body and inherited mutations only exist in the cell type that mutated. B. Somatic mutations only affect males and inherited mutations affect any gender. C.

What are the two major organ systems in plants

Mitosis occurs where in the body? Where does meiosis occur?