(Q).
Behaviors that improve fitness increase through natural selection, and adaptation is the result of natural selection. Given these facts, behaviors that improve fitness increase through what among the following options: - kinetic energy - Animal survival - increases - hydration - Riding a bike - competition - adaptation - insulation
(A).
adaptation

(Q).
Fertilization occurs when sperm swim to an egg inside an archegonium, and sperm nuclei are released into the archegonium. Given these facts, what enters the egg among the following options: - DNA - flow of electrons - insects - Chemical energy - fallopian tube - sperm nuclei - acid - pollen
(A).
sperm nuclei

(Q).
Treating water is used to remove harmful substances before drinking, and boiling is the safest method of treating water. Given these facts, what can be done to water to remove harmful substances before drinking among the following options: - evaporation - vaporization - Dipping a magnet into it - hydration - Mixing in heavy metals - Cooking - Boiling it - Adding purified water to it
(A).
Boiling it