Which organs are found within the nervous system

Which type of microscope is the most widely used and shows cells against a bright background?

In a eukaryotic cell, what's a non-organelle part of the cell? A. Ribosome B. Mitochondria C. Nucleus D. Cytoplasm

Which geologic process formed the Grand Canyon?

Why is it important to study evolution and from where organisms have originated

How can DNA and RNA make a protein if they are made of different molecules?

What happens to the pressure exerted on blood when the heart contracts? What happens to pressure exerted on the blood when the heart relaxes or the blood vessels dilate?

Breeders can use a Punnett square, such as the one below, to predict the outcome of a genetic cross. If the genotype of both parents was Aa, what would be expected of the genotypes among their possible offspring? Half would have the genotype AA.

Scientists who study nature on different levels, from a local to global scale are called A communities B biosphere C ecologists D immuniologists

What do unicellular organisms do to maintain homeostasis?

Which animals has a heart in which oxygenated and deoxygenated blood mix?