The work done by the heart is often compared to that of a pump. This is because our heart also uses ___ to keep

blood flowing through our body.

A) force

B) water

C) levers

D) osmotic pressure

What creates more friction aluminum foil, wax paper or plastic wrap

Stem cell research could lead to medical cures. Stem cell research probably would not benefit A) the eradication of childhood illnesses. B) regeneration of heart tissue. C) new treatments for cancer patients.

What is the name for this-The bending of waves around a barrier

an error occurs when the DNA of a cell is copied. however, the cell does not divide after the error is detached. which statement best describes the cell cycle for this cell

Species evolve certain traits because they are trying to adapt. true or false?

20. In certain species of summer squash, fruit color is determined by two interacting genes. A dominant allele, W, determines white color, and a recessive allele (w) allows the fruit to be colored.

When you look out the window, you can see constantly moving air. air is cycled in order to reach equilibrium. B) since these change the density of air and we know the air flows from the region of high density to the region of low density.

What effects do deforestation have on the animals?

Which best defines a diploid cell during meiosis? a cell that has double the number of chromosomes as the parent cell a cell that has half the number of chromosomes as the parent cell a cell that has double the number of chromosomes as the daughter

What is the best definitionof magnetosphere? a. a magnetosphere is a magnetic field around earth. b. a magnetosphere is the groups of atoms that are lined up inside a magnet. c.