What did milankovitch propose as the main cause of ice age

A student observes a blood vessel in a grasshopper. For this reason, the student claims that the grasshopper has a closed circulatory system. Evaluate the students claim.

During exponential growth the rate of growth

What is another term for Fermenation? A. Aerobic respiration B. Anaerobic respiration C. Cellular respiration

What is the definition of dorsal

True or False. Ducks have gills.

Why is the hormone oxytocin important?

Bacteria and fungi are important decomposers. however, which decomposition function is almost entirely the work of fungi?

What is the second step of the scientific method

A structure on a cell that binds with something, like a hormone is called a (n) A. catalyst B. protein C. receptor D. axon

Which statement is true? A. Lipids are a type of fat. B. Fats are a type of lipid. C. Fats and lipids are separate and unrelated substances. D. All lipids are fats, and all fats are lipids.