Afood web illustrates a squirrel eating a nut. what is the role of the squirrel in the food web? a. decomposer b. producer c. primary consumer d. secondary consumer

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

The mammal pictured below is a silvery mole rat. which statement is an inference based on the picture? the animal is ugly. the animal has hairless feet with sharp claws. the animal has prominent upper and lower incisor teeth. the animal likely has poor vision since its eyes are so small.

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis