Where is earth located in relation to the sun?

a. it is the third planet from the sun.

b. it is the second planet from the sun.

c. it is the fifth planet from the sun.

d. it is the fourth planet from the sun.

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.

All vaccination should(n’t) be mandatory! 1.at least 5 sentences explaining 2.why? 3.in the end summarize the sentence

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms