How can you remember the difference between an independent variable and a dependent variable? Think about what the words independent and dependent mean.

Which organisms have pharyngeal arches that develop from all three germ layers and go through the same development stages as embryos? 1.bird 2.ladybug 3.starfish 4.snake

In an experiment, the hypothesis is if the wavelength of the light shining on a plant is shortened, the rate of the photosynthesis is slowed down. this hypothesis testable falsifiable both of the above none of the above

What finding has provided scientific evidence to support life on earth possibly evolved from microbes? a) the curiosity rover discovered warm and wet enviromental conditions on mars similar to earth. b) space probes discoverd evidence of possible extraterrestial life on other planets. c) space satellites provided pictres of prehistoric life on earth d) evidence of human fossils found in rock samples.