the first one is false because DNA replication doesn't begin by breaking apart the hydrogen bonds thats the second step
-the second one is true
Gravitational attraction between two celestial objects (i think)
Answer:
Thickness of the skin and hair on the body
Explanation:
Thickness of the skin and hair on the body are the characteristics of animals that help them to survive the temperatures of their environments. If the animal is herbivore so they feed on plants while if the animal carnivore it feed on flesh. Yes, they have characteristics such as long legs and powerful nose etc that help them find and capture food. Yes, the animals have ways to sustain themselves if the availability of food or water is limited such as camel. Different natural defenses used by these animals against predators such as Camouflage. Yes, they have characteristics to protect their young such as horns used by deer and buffalo.
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
The collision theory<span> is based on the assumption that for a reaction to occur it is necessary for the reacting species atoms or molecules to come together or </span>collide<span> with one another.\</span>