Rats have the same essential amino acids as humans. what is the consequence if tryptophan is missing in the diet of laboratory rats

If a population grows larger than its environmental carrying capacity, what will happen? Question 13 options: The death rate may increase. Immigration rate may increase. Birth rate may rise significantly. Death rate might fall significantly.

In pea plants being tall (T) is dominant over being short (t). Also in pea plants having green pods (G) is dominant over yellow pods (g). One plant named George, is heterozygous for height (Tt) and homozygous for yellow pods (gg).

What is one reason some leaves are spiny, or needle-shaped? A. to increase the rate of formation of food in leaves B. to reduce water loss from leaves in dry climate C. to store food in dry climates?

2.56 millimeters - centimeters For dimensional analysis

Which factors contribute to the extinction of a species

Animals that eat only primary producers are called what

Plant species A has a diploid number of 12. Plant species B has a diploid number of 16. A new species, C, arises as an allopolyploid from A and B. The diploid number for species C would probably be A) 12. B) 14. C) 16. D) 28. E) 56.

Which seedless plants have been used to treat burns? club mosses mosses ferns horsetails

Ecosystems have trouble adjusting to short term changes t f

Since the llamas will not sell well with malformed feet, you decide to select the herd against this defect.