Of all the water on Earth, what is the percentage of drinkable fresh water?

23%

77%

97%

0.69%

You catch, tag, and release 100 fish back into a pond. According to the data below, what is the best estimate of the number of fish in the pond?

In the alternation of generation life cycle spores grow into gametophyte plants via a process called

1 comets lives are increased the more often that they pass by the sun true or false 2 most comets do have tails that keep them in the outer solar system far away from earth true or false

What type of divergent adaptation occurs when a small subpopulation enters a niche?

The energy entering this system is equal to the energy leaving the system. Based on the law of conservation of energy, how many units of energy are entering the system? A. 5 units B. 10 units C. 15 units D. 20 units

How does information flow through the most common type of cns neuron (iist the 3 regions in the proper order) ?

The thalamus sends auditory information to the primary visual cortex. true or False

Which of the following is an accurate definition of relative age? A. a rock's age as compared to the ages of other rocks B. the number of years since the rock formed C. a rock's age based on how much carbon-14 it contains D.

ALL BUT ONE factor is believed to be the source of Earth's internal heat energy. That is

Which advantages does the skeleton of birds provide for flight? a. Light hollow bones b. Volume and heavy weight for lift c. Rigid structure to anchor strong muscles for flight d. Loosely unconnected bones