Northern foxes have black fur as the dominant trait, while red fur as the recessive trait. The genotype for the fur color of northern foxes is given below. Identify the phenotype for each of the following: Bb -black fur
-red fur
-both black and red fur color
-Orange color

Manuel is performing a scientific investigation to determine whether fertilizer A or fertilizer B is more effective at increasing the growth rate of tomato plants. Manuel measures and separates 30 tomato plants into two equal groups that are planted in identical environments. He gives one group fertilizer A, and gives the other group the same amount of fertilizer B. During the first week of the investigation, he gives the tomato plants in both groups the same amount of water. During the second week, however, he forgets to water the tomato plants being given fertilizer B, but still provides water for the tomato plants being given fertilizer A. Two weeks after planting, Manuel measures the tomato plants and discovers that the tomato plants given fertilizer A have grown much more rapidly than the tomato plants being given fertilizer B. Manuel's resultsA. are not valid because one of the variables was not controlled during week 2.

B. are valid because he controlled all of the variables in week 1.

C. are valid because he designed his experiment correctly.

D. are not valid because he should not have grown the plants in identical environments.

Which statement describes why natural populations cannot keep growing exponentially?

What do you think was the shang dynasty most important achievment why

What is the genotype and and phentotype?

Which is an example of how bacteria help keep the environment clean?<<<

When energy is released from sugar molecules,many by - products are formed.Which by - Product is expelled from the cell?a.C
b.CO2
c.H2
d.O2