Valves ensure blood flows toward your heart. Vein valves work to bring the blood that flowed down via arteries back up to your heart.
Answer:
they use the baby cow then it grows and then there is milk
Explanation:
Atom, organelles, molecules, and cell
Answer:
Sedimentary rocks are formed from the accumulation of minerals due to erosion.
Metamorphic rocks are rocks formed under extreme heat and pressure.
Igneous rock is a type of rock formed when magma cools.
All three are rocks formed under different circumstances.
Answer:
The preservation of biodiversity provides a vital link to critically expand the molecular diversity necessary for successful drug discovery efforts in the future. ... This ongoing loss of biodiversity is altering ecosystem functions and the ability to provide goods and services for human health and well-being
Explanation:
