Which occurs within self sustaining ecosystem?

Which of the following macromolecules a the main quick energy sources for cells? are A lipids B carbohydrates C nucleic acids D proteins

Why do scientists think that birds evolved from dinosaurs? A. Some dinosaurs had feathers. B. Birds and dinosaurs appeared on Earth at approximately the same time. C. Both are warm-blooded animals. D.

Which consist of sperm cells and egg cells?

Why Haven't More Transitional Fossils Been Found? Choose ALL That Apply -Fossil Formation Is Rare -Smaller Populations Produce Fewer Fossils -More Transitional Fossils Do NOT Exist -Evolution Is A Slow Process

Cite two reasons friction occurs between surfaces

What type of geological events occur at the edges of the tectonic plates?

What part of the body has the highest percentage of fungal infections?

In pea plants, the tall-stem allele and the short-stem allele are different forms of the same what'

Why wouldnt there be any fresh water if water couldnt evaporate

In which of the three blood vessels does the blood flow the greatest?