A useful classification system does NOT:

A. change the taxon of an organism based on new data
B. show relationships
C. reveal evolutionary trends
D. use different scientific names for the same organism

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

In tomato plants, mendel found that the allele for smooth seeds (s) is dominant, while the allele for wrinkled seeds (s) is recessive. which of these punnett squares shows crosses between two plants heterozygous for smooth seeds? i need this to be answered as soon as ! sry the picture is bad quality

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?