From Earth, the Sun appears brighter than any other star because the Sun is the: Group of answer choices A. Newest star
B. Closest star
C. Hottest star
D. Largest star

2. The color of a star provides a measure of its:

Group of answer choices

Surface temperature

Mass

Size

Composition

3. The temperature of a star can be estimated using:

Group of answer choices

color of the light emitted.

stellar biochemical activity.

intensity of light emitted.

stellar volcanic activity.

WHOEVER ANSWERS ALL THESE CORRECTLY WILL GET BRAINLIEST.

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.

Does the sun release radiant energy?

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.