Why are cats, bears, monkeys, and humans all considered mammals?

the kidney is a organ that collects wastes and excess water from the blood and send them to bladder where they are stored before being removed from the body. which two system work together to perform this function?

3. Why do you begin focusing on scanning power rather than high power?

How many electrons are in the outer energy levels of the highlighted group of elements

If you were to take all of the DNA from all of the chromosomes in your body and stitch them all together into one continuous linear double helix, how long would that helix be? Use the fact that the haploid human genome contains 3.

Two species have a relationship with one another in an ecosystem. suppose one of these two species goes extinct. which type of relationship did the two have if the surviving species population increases after the other goes extinct?

Broken circuits can produce strong electric shocks.

How are earth's organisms and crust interdependent? read more >>?

Which technique is used to separate the different cell parts?

Where does the mitochondrial DNA originate?

Which structure of a protein is the arrangement of polypeptides? A - primary B - secondary C - tertiary D - quaternary