What is the difference between embryonic stem cells and adult cells?

Which base is connected to its complementary base in a base pair by three hydrogen bonds? A. Uracil B. Thymine C. Guanine D. Adenine

Daphnia longicephala is a freshwater crustacean that can detect chemical cues produced by the predator Notonecta glauca.

What is different about the way the genus and species names are written compared to the other taxa?

Which snail population has the larger average shell thickness, the population from 1871, or the population from the 1980s?

What is starch? what type of macromolecule is it?

3. How big is the Clark Refractor in Arizona?

Radioactive uranium-235 has a half-life of 704 million years. If it was incorporated into dinosaur bones, could it be used to date the dinosaur fossils?

hurricanes can damage or destroy barrier islands. suppose a barrier island that separates an estuary from the ocean was damaged by a storm: how would this affect the estuary

A cell with a chromosome number of four undergoes meiosis what is the result

How does acid precipitation cause chemical weathering?