Why is astronomy considered an observational science? It is hard to do experiments in astronomy.

Scientists do not have a sample of other stars or galaxies that they can put in a bottle.

Astronomers don't like telescopes.

It is impossible to do theoretical science in astronomy.

What is the following best defines climate?

1. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 50%25%0%100% 2. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 0%100%50%25%(picture 1 is for question 1, and picture 2 is for question 2)

How would you expect the mrna codons that code for the amino acids that make up hemoglobin to compare between humans