Explain what the placebo effect is

Genetic variability is the most important result of asexual reproduction sexual reproduction

Caffeine is a stimulant to the central nervous system. regular consumption may cause physical dependence; would it be appropriate to consider caffeine an addictive substance?

How do you describe what a tarantulas burrow looks like?

What power source is the best in order to comply with city restrictions

Which of the following is a producer? A a crow that consumes a dead animal on the side of the road B a fish that eat smaller fish for its food C agiraffe that eats the leaves of the trees D a plant that has insect larva feeding on its roots

Of the 30000000 species on earth, how many are lost each hour?

What are two molecules that carry energy in a biochemical pathway

Which of the following causes a tumor to form

Why might a water table drop

How did the 1898 discovery of blood types affect society?