Select the correct answer from each drop-down menu. Which water conservation method is Jack using? Jack has built small earthen dams in the furrows between the ridges on which he plants crops. Jack is using the (blank) method of water conservation. This method conserves water by holding precipitation water between the (blank) , allowing the water to infiltrate the soil and eliminate runoff.

The images show two species of tree frogs in a particular region. the gray tree frogs are adapted to the trees of the woodlands, while the green tree frogs can survive in woodlands or grasslands. the gray frog was abundant in the woodlands. because of climatic changes, most of the trees in the region died, and the woodlands changed to grasslands. in such a case, the . the gray tree frog is closely related to the green tree frog genetically, but they have different mating calls. this suggests that speciation occurred because of .