4. It takes light from the Sun approximately 8.19 minutes to reach Earth, while it takes light from the star Ross 154 approximately 10 years to reach Earth. Why does it take
Ross 154's light so much longer to reach the Earth?
The mass of Ross 154 is much larger than the Sun
The Sun has a much higher luminosity than Ross 154
Ross 154 is much farther away from the Earth than the Sun
The Sun has a higher temperature than Ross 154
CLEAR ALL

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called

the answer is c because it is most logical.