How do rods differ from cones in the retina? a. Unlike cones, rods cannot detect color. b. In contrast to cones, rods are optimally activated by light entering the center of the eye. c. Rods are less sensitive to light than cones. d. Rods provide the ability to see sharper images than cones.

1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.

As the earth formed, the force of gravity increased due to increased mass. what effect did this increased gravity have on the forming planet?