Systems
Which nervous system lowers heart rate, decreases blood pressure, and stimulates digestion?

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

Explain why phospholipid molecules form a bilayer. (3 marks)

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas