Why can fossils be found in ancient river beds

How many pairs of chromosomes does a human cell contain?

A farmer in western Minnesota is retiring. He wants to stop farming his 3,000 acres and turn the land into a prairie. He begins to plant grasses that are native to a short-grass prairie.

Which phase of the cell cycle comes before the prophase stage of mitosis? (1) Anaphase (2) First gap (3) Synthesis (4) Second gap

How are dominant alleles often represented

Integrated pest management (IPM) is a great way for farmers to reduce pesticide use and save money in the long term, but it does not work in every situation. A. True. B. False

Why is the endangered species act often a center of controversy? scientists want to make all species endangered. animals are listed that are not worth saving. endangered species cannot be moved to similar habitats not threatened by construction.

Any disorder associated with the Y chromosome

What type of organic molecule is a starch

You will try to view as many cell organelles as you can at different magnification levels. Write an investigative question that you can answer in doing so

Geography, among other things, is responsible for the rise and fall of great civilizations. What three things were responsible for the rise and fall of some of the great Mesoamerican civilizations in the Americas?