Scientists believe that over millions of years lungfish changed to become the first amphibians. what evidence do scientists use to support this idea?

a.)the shape of rock formations
b.)direct observation
c.)fossil evidence
d.)data collected by early humans

You want to cultivate some exotic plants at your farm. however, the climate is chillier than the temperature range favorable to the crop. which is the best method to use for the cultivation of this exotic crop? a. use a crop rotation method b. use a lot of fertilizer c. prepare the seed bed properly d. use a greenhouse e. use irrigation