How much energy is lost at each level of the food chain?

What is the term for a male reproductive cell?

In a population of damselflies, wings become progressively longer over the course of 8 generations. Damselflies grown at high temperatures develop short wings; those grown at low temperatures develop long wings.

You are called to the scene of a 25-year-old male who is complaining of abdominal pain. he describes the pain as very serious and nearly fainted earlier. you find his abdomen is firm and painful to the touch.

Will the forest fire affect the carnivores of the ecosystem

What causes the mechanical weathering of rocks and soil

Norway rats have 42 chromosomes in their diploid cells. If a diploid rat cell enters meiosis, how many chromosomes and double-helical molecules of DNA will be present in each daughter cell at the end of meiosis II?

Which discovery is attributed to Phoebus Levene? A. extraction and observation of DNA B. identification of ribose and deoxyribose C. recognition of RNA as DNA's messenger D. construction of an accurate DNA model

A small population of chimpanzees lives in a habitat that undergoes no changes for a long period. how will genetic drift probably affect this population?

Which type of cells can differentiate into many different types of cells? select all that apply

A person has such severe epilepsy that his limbs are paralyzed, and doctors recommend a radical hemispherectomy. what results can he expect?