At what position if the earth in its orbit is it summertime in the northern hemisphere?

Position 1

Position 2

Position 3

Position 4

I think it is position 1 but idk

Chromosomes move to the middle of the cell during what phase

Heart rate decreased suddenly and then MAP immediately fell because peripheral blood vessels were extensively vasodilated. The biker had an acidosis from hyperventilating and the respiratory integrating center was overwhelmed.

Changing the temperature affects the shape of an enzyme. how might an increase in temperature affect the enzyme's function in the cell

Facts about Dolphins

What is a positive effect that predators have on a prey population?

How does the live ensure that the body will have a constant supply of energy

How do scientific theories compare to hypothesis

A woman gives birth to a son. Two years later, she gives birth to another son. What is the probability that her third child will be a girl? Explain your reasoning.

What are the two major purposes for mitosis?

How do organisms come to live on newly formed volcanic islands?