The photograph below shows jamal’s bird feeder. jamal asked the question “are hummingbirds attracted to red feeders? ” then, he set up an experiment to test the question. what is the independent variable in jamal’s experiment? the amount of food the color of the feeder the height of the feeder the number of hummingbirds

How does the fossil record provide evidence that the modern whale evolved from the anthracotheres? a) the modern whale looks like their ancestor the anthracotheres. b) the modern whale has all of the same structures as their ancestor. c) there is not enough evidence to suggest the the modern whale evolved from the anthracotheres. d) the anthracotheres has a structure that is still present in the modern whale, but is no longer of use to the modern whale.