The answer is D. Scientists may find new information that causes them to modify their ideas.
Correct: The sun is the center of the solar system. It is mostly gas. It is the most massive object in the solar system.
Answer:
In sexually reproducing organisms, the number of chromosomes in the body (somatic) cells typically is diploid (2n; a pair of each chromosome), twice the haploid (1n) number found in the sex cells, or gametes. The haploid number is produced during meiosis.
Ph in ground water ranges from 6.5 to 8.5 any higher would be low-quality so the answer would most clearly be Low levels of fecal coliform.
Change over time. I believe this is a multiple choice question, but you have not provided the options.