How many trophic levels are there in the following food chain?

grass → grasshopper → frog → snake

A. Five

B. Four

C. Three

D. Two

In fruit flies long wings (W) are dominant to short wings. What is the phenotype of the known parent

Why would Hooke's discovery have been impossible without the invention of the microscope? A. Because all living things are made up of cells. B. Because cells are too small to see without a microscope C.

The medical term used to describe a chronic condition of long-lasting, severe pain around the vaginal orifice, which feels raw is

If a mother has Type "A" and the father has Type "AB". What % of the offspring will have type A blood?

What human activities prevent the artificial ecosystem of the city park from changing?

Why is forecasting human population growth more difficult than forecasting population growth in other animals?

You and your physiology instructor are trapped in an overturned ship. To escape, you must swim underwater a long distance. You tell your instructor it would be a good idea to hyperventilate before making the escape attempt.

Thermal vents are found at the bottom of the ocean in the benthic zone.

What is a transitional fossil? what is a transitional fossil? a transitional fossil is in the middle of a direct lineage stretching from ancient forms to organisms alive today. transitional fossils were poorly adapted to their environments.

Explain the processes involving mitosis