Which is the first step in the scientific method? ask a question, conduct background research, construct a hypothesis, perform an experiment

What type of fossil fuel is made from trees, ferns, mosses, and other marsh plants?

Which is present only in eukaryotic cells

A group of students is doing a project on a lake ecosystem. The lake looks suspiciously green. No sunlight penetrates through.

Which of the following objects is a burning ball of mostly hydrogen atoms? a. an asteroid. b. a galaxy c. a star d. a moon

Where is myosin found in skelatal muscle cells

In cases of liver or kidney failure, doses of medication may need to be:

A scientist is testing the effectiveness of Drug X on cancer. She gives a small amount of the drug to the mice that have cancer.

The genome of the pufferfish, Fugu rubripes, is only one-tenth the size of mammalian genomes. Which of the following most likely accounts for this difference? Choose one: A. movement of mobile genetic elements B.

A genetic factor that blocks another genetic factor

What property of light waves explains the appearance of the pencil under water?