An animal uses its long sticky tongue to snag bugs out of the holes in trees. Over time the trees bark becomes thicker, making more difficult for the animals to reach the bugs. In order to reach the bugs, the animal stretches its tongue, eventually causing it to become longer. The organism
reaches the bugs, survives, and reproduces passing the long tongue trait onto its offspring
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After reading the paragraph below, answer the questions that follow. researchers have created a robot that has a very thin leg that is moved by cardiac (heart) cells contracting in unison. the robot, made of a polymer similar to that used in making contact lenses, is bathed in heart cells with supporting cells, which then attach to the robot and provide movement as they contract. all of the cardiac cells working together can cause the robot leg to move in a way that individual cells could not. this is an example of a. emergent properties of cells. b. energy flow through an ecosystem. c. adaptation. d. internal environment regulation.

If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?

The cluster of developing cells from conception until birth is called an