Answer:
Evolution accounts for the unity and diversity of living things through adaptation. Unity comes from the adaptation and similarities that all organisms share which is DNA, while diversity comes from descent with modification or natural selection.
Answer:
its b i did that before at school
Explanation:
<span>The scientific method is the process by which scientists build a consistent and objective ... Formulation of a hypothesis to explain the phenomenon in the form of a causal .... The application of the scientific method is limited to independently </span>
There could be a lot of reasons. To help break down food for the plants, kill off bad and harmful things that might damage the plant.