In An experiment, there are two groups. Which group is not changed in anyway?

How does water flow on earth

How did insects become resistant to DDT A. Some were already resistant and were the survivors that could reproduce. B. All insects already had genetic resistance to DDT and it took effect once exposed. C.

Which of the following is not an example of active transport. a. facilitated diffusion b. osmosis c. endocytosis both a and b

Hypothesize how many pennies you believe a floating boat made out of a piece of aluminum foil about the size of your palm could hold before sinking. A 0 pennies B 1 - 10 pennies C 11-50 pennies D Greater than 50 pennies

How might human activities change to compensate for a decrease in water supplies? a) humans might build a factory b) humans might build draining system c) humans might extract more water from the ground d) humans behavior might not change because

The distance covered by a degree of longitude is

Which of the following is NOT a red flag about your alcohol consumption?

What is the final energy source that the muscles need in order to move? fat sugar ATP glycogen

During ages six to eleven, Freud's latency period, what do experts believe happens to the libido? A. That it is channeled into self-development B. That it is only seen in small, private groups with peers C.

Name the four classes of organic compounds containing carbon