Ok I will answer give me one sec
Genetic variation allows for a greater chance of a population surviving. For example, if a plant species acquires a disease, without genetic variation the disease would just keep getting passed on to the next identical organism and the population would decline and eventually die. But genetic variation prevents that from happening, because you have so many other species in the ecosystem, and genetic variation is a product of sexual reproduction meaning that the offspring of the diseased plant has a possibility of not inheriting the disease.
The dependent variable would be the heart rates of her classmates.
At first glance cycads and palm trees look very similar. How are they distinguished? a. Cycads have cones, and palm trees, a gnetophyte, have single large fruits.
Hope this help