Are grapes and salad biotic or abiotic

The ABO blood type system in humans demonstrates

What are the two parts of a lipid? Check the correct answers below. amino group fatty acid carboxyl group R group nucleotide

three different ways that amphibians may absorb oxygen.

The membrane covering the organs of the abdomen is called the

Distinguish between a variable and a control

Which is not a similarity between terrestrial and aquatic pyramids? a. both have producers as the base that can harvest the sun's energy to make food b. both types still consist of producers, herbivores, and carnivores c.

Is coal considered a mineral or not?

Which of the following would cause a plant to grow teller

Explain why chances of nose bleeding increase with altitude in humans

Trees gives us oxygen, then how can we breathe in desert?