A student is conducting an experiment to determine what type of soil earthworms prefer, wet or dry. Ten earthworms are released into a cardboard box that contains dry soil on one side and wet soil on the other. Over 24 hours, the student records the number of earthworms on both sides every hour.
What component of the above experiment is the dependent vanable?
O species of worm used
O soil moisture
O average number of earthworms in each type of soil
O number of trials

Why do carbohydrate molecules function so well as fuel for the body?

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing