Many years ago, trappers for the hudson's bay company who were trading the fur of both the snowshoe hare and lynx, noticed a definite pattern of survival. some years there was an abundance of hares and other years they seemed to disappear. when biologists analyzed records kept from 1820 to 1935, they discovered relationships between populations of lynx and hare. describe one relationship seen in the data. a) as one population increased, so did the other. b) the lynx population has gradually declined over the years. c) the higher the hare population, the higher the lynx population. d) when the lynx population was low, the hare population increased.

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward