If a drought occurred reducing the amount of available water, some trees, such as those with deep roots that can reach the water table, would be naturally selected over other trees. if the drought continued for an extended period of time, the trees would likely evolve until most of the trees possessed drought-resistant characteristics. which of the following allows natural selection and evolution to occur? a. increasing the height of the water table b. having an identical genetic make-up c. differences in the characteristics of individual trees d. using other plant parts instead of roots to absorb water

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

Reactants undergo chemical reaction to form products. this chemical equation represents one such reaction. the coefficient for one of the reactants or products is incorrect. which part of the chemical equation is incorrect?