16. how do you write a hypothesis?

To write a hypothesis, you can create an "if-then" statement that indicates directionality, or you may also use the null/alternative hypothesis.

Examples:

If-then: If you get at least 6 hours of sleep, you will do better on tests than if you get less sleep.

Null: The number of pets in a household is unrelated to the number of people living in it.

Alternative: The chemicals will affect the plants.

it would affect precipitation by causing flooding in some areas of the world due to climate increasing, causing the glaciers in the northern and southern pole of our planet to melt.

i wish you would have provided choices to simplify it and allow me to give an exact answer.

a- all cells come from pre-existing cells