The external opening to the reproductive system of a cow is the:

The first model of the atom was developed through: A) scientific experimentation and data analysis with water vapor and gases. B) observation of the light emitted by elements when they are heated.

What is the most likely cause of algal blooms? O A. Deforestation O B. Increased precipitation O C. Burning of fossil fuels O D. Fertilizer runoff

An advantage of grafting is to increase the quality of the rootstock. a) true b) false

The survival of a living organism occurs when there is a (n) __ of the body systems.

The first true prokaryote cells were formed from

After 5 divisions, how many cells are there?

A student monitored tides using a webcam. She noticed that the tide reached different parts of the shore at different times of day. Which factors can explain the student's observations?

In gamete formation, the starting cells in females are the ___ and the

Under a microscope smooth muscles are

Why has the usage of Natural Gas dropped throughout the years?