Climate is long term weather condition in a certain area.
Copper key and glass lens
When a hypothesis has been tested several times using experiments and found to be true, such a hypothesis becomes a theory.
<h3>What is a theory?</h3>
A theory is a hypothesis that has been tested by experiments by several independent researchers.
Hypotheses are tentative statements without any scientific proof or backing. They can be tested using experiments.
Hypotheses remain accepted when there are supportive experimental data and become theories when several independent experiments support them.
More on scientific theories can be found here: brainly.com/question/2375277
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The correct answers are:
- background extinction;
The background extinction is an extinction that occurs naturally, and small number of species are affected by it in certain periods. It occurs as a natural way of the evolution of the species.
- mass extinction;
The mass extinction occurs after a massive natural catastrophe that influences the whole planet, or big portion of it. In this type of extinction, the ecosystem changes dramatically because the majority of the species die out in a very short space of time.
Albino genotype: mm
It is expected zero percent of the time.
Melanin genotypes: Mm, MM