What causes lightning? i need asap a. buildup of light in a cloud b. buildup of pressure in a cloud c. buildup of sound energy d. buildup of charge in a cloud

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

Which is the best example of plant tissue? the answer is d (just took the test)