Which method offers the MOST reliable way of assessing whether caffeine consumption boosts athletic performance?

naturalistic observation
experimentation
descriptive research
correlational studies

As soon as possible this assignment is due in 5 minutes atoms in a molecule are bonded together by sharing, gaining, or a. photons b. protons c. neutrons d. energy f. electrons

Average annual precipitation and are the two major features that define the biomes on earth.

Fossils can only be formed when? if mud, silt or tar is in the area to preserve the fossil ierosion does not occur and allows the fossil to form oxygen and microorganisms cannot decay the bones the area is dry and does not contain mud or silt