Which are true about the what are true about the embryonic and fetal stages? Check all that apply.
The embryonic stage is the third to the eighth week after fertilization,
The fetal stage is the ninth to the thirty-eighth week after fertilization,
In the embryonic stage, the number of cells increases.
In the fetal stage, the number of cells remains the same.
An embryo is an early developmental stage that ends when all organs are present.

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.