What two important factors determine the nature of an ecosystem?
a Temperature and humidity
C, Recycling of nutrients and flow of energy
b. Light and temperature
d. Flow of energy and predation

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)