Which of the following is a producer?
a. a crow that consumes a dead animal on the side of a road
b. a fish that eats smaller fish for its food
c. a giraffe that eats the leaves of trees
d. a plant that has insect larvae feeding on its roots

When balancing a chemical equation:

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.

Use the de broglie's wave equation to find the wavelength of an electron moving at 4.5 × 106 m/s. show your work. note: h= plank's constant (6.62607 x 10-34 j s)