What is a vaginia?

Trace fossils provide clues about where and how an animal lived. Which of these is NOT a trace fossil? A) teeth B) burrow C) paw print D) footprint

If frank is using a drug that causes addiction in nearly 75% of those who use it, he is probably ingesting

What gas contributes to 78% of earth's modern atmosphere? a. argon b. nitrogen c. oxygen d. carbon dioxide

Carbohydrates, lipids, and protein are types of carbon compounds are broken down to produce what?

Which statement about all animals is false? Group of answer choices All animals are eukaryotes. All animals eat other organisms. All animals are descended from a common ancestor. All animals have a dorsal nerve cord.

A bacteria population triples in number each day. if there are 2, 551,500 bacteria on the seventh day, how many bacteria were present on the first day?

What is another name for major depressive disorder?: a. unipolar depression b. double depression c. dysthymia and) seasonal affective disorder?

Which term is the name of the diploid stage of this plant life cycle? A. Gametophyte B. Sporophyte C. Sperm D. Egg

What is a specific measure to which other measures are compared to ensure uniformity?

What cells are specialized for responding to environmental stimuli?