What is the function of a raphide crystal?

96% of marine animal species became extinct in the permian mass extinction at the end of the paleozoic, 251 million years ago. why does the blue curve show only a 50% drop at that time

Explain the 3 groups in which connective tissues are classified

In a world that has fewer plants, how would the environment be affected? There would be more oxygen. There would be more carbon dioxide. There would be more glucose. There would be more ATP available.

An alien civilization is in order around a high mass supergiant. should they stay or should they go elsewhere? Why?

What is the name of the enlarged sac to which the lumbar trunks and the intestinal trunk return lymph?

In the novel The Joy Luck Club, author Amy Tan examines degrees of ___ among traditional Chinese mothers and their Americanized daughters. A. assimilation B. evocation C. redolence D. resonance

What does the energy entering the food chain originate

Which cyclic process is responsible for sexual reproduction of a diploid sporophyte

Through out history, people have been studying the living and nonliving world. what is the name of the formal procedure scientists use to study the world around them?

describe how enzymes effect chemical reactions and explain why this makes enzymes important to living things