Which characteristic of potassium makes it useful for dating rocks?

It has a long half-life.

It decays at an unknown rate.

It produces lead as it breaks down.

It can be used to date all types of rock.

When these two species live in the same area they are apparently modifying their

Which of the following statements is correct? A. The sternum is dorsal to the spine. B. The sternum is posterior to the spine. C. The heart is dorsal to the sternum. D. The heart is posterior to the spine.

Name the enzymes required for the starch digestion

What is Portal System? a. It is where an organ has a lot of capillaries for better circulation. b. It is where an organ is supplied with two interconnecting arteries. c.

Which determines what an organism looks like and how it grows and develops? A. protein B. cell C. DNA D. cyclins

How is this new disease discovered in china different from the flu and common cold?

What is the minimum amount of calories the arctic tern must eat every day in order to stay alive?

Where is bile stored?

How many unique gametes could be produced through independent assortment by an individual with the genotype AaBbCCDdEE? (a) 4 (b) 8 (c) 16 (d) 32 (e) none of the above

A quick automatic response to something in the environment is called