Which substance is a compound? A. Water B. Gold C. Oxygen D. Hydrogen

What type of cellular respiration does Cryptococcus undergo? aerobic or anaerobic?

How does energy move through ohio's ecosystem

Why do scientists believe that life first emerged from the ocean and onto land well after the ancestors of modern day cyanobacteria populated the earth

Which statement correctly describes other ways in which nebulae and stars are different? A. A star always has a higher density than a nebula. B. Stars can form inside a nebula but a nebula can never be produced by any star. C.

Which of the following are made of repeating sugar units? Choose all answers that are correct. A. nucleic acids B. carbohydrates C. proteins D. lipids

Which structure of the trachea prevents it from collapsing inward and obstructing the air passageway?

What is a Divergent boundary and where is located?

A species displaying which of the survivorship curves is likely to produce the most offspring?

When comparing dogs to wolves, scientists found evidence that supports the idea they come from a common ancestor.

Riddle: I'm mostly made of water, but that's not all. I fill up the cell, from wall to wall.