Acovalent bond is likely to be polar if
a. the two atoms sharing electrons are equaly electronegative
b. it is between two atoms that are both very strong electron acceptors
c. the two atoms sharing electrons are of the same element
d. one of the atoms sharing electrons is much more electronegative

Afarmer has applied a pesticide to control a pest population that is affecting her crops. the pest population has reacted as shown below. which best describes the process that the pest population has experienced due to this environmental change? a genetic diversity b natural selection c natural resistance d genetic resistance

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.

One of the purposes of transcription is to produce a sequence of bases that