The surface range on earth is about 60 c to -80 c. what do you think accounts for the difference in temperature ranges on earth compared to other planets
a) the greater average distance from the sun
b) the amount of water found on the planet
c) the presence of a well-developed atmosphere
d) the average orbit around the sun

If someone could do the first couple, just so i can see how it's done that would be great! 20 points. complete a dichotomous key for the 10 leaves on the common leaves sheet. the chart provided here allows for 11 pairs of statements. depending on how you build your dichotomous key, you may or may not need all of them, or you may need to add some.

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm