1) the length of one day on earth is determined by how long it takes
a) the moon to revolve once
b) the moon to rotate once
c) earth to rotate once
d) earth to revolve once

2) approximately how long does it take for the earth to make one orbit around the sun
a) one day
b) one month
c) one year
d) none of above

Sperm pass through the and connect to a short ejaculatory duct. vas deferens prostrates seminiferous tubules none of the above

The carrier molecules of the electron transport system are located in the

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.