The earth moving and shifting the ground below.
Answer:
The biological fitness of an organism is dependent on its ability to survive and reproduce in a given environment. If different traits or alleles increase the fitness of an organism, those alleles will consequently increase in the gene pool, and that trait will increase in the population.
Explanation:
Insects are hard to control because they reproduce in large numbers; they are small, can fly, and hide in small places, making them difficult to see and find. They are able to develop resistance, over time, to pesticides and pass that on to their offspring.
A lake ecosystem includes biotic (living) plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions. ... Lentic ecosystems can be compared with lotic ecosystems, which involve flowing terrestrial waters such as rivers and streams.