The next condition is there must be a difference in fitness. The different traits must help the individuals survive and reproduce. How did the different trait help the one cactus survive and reproduce?

One of the largest seafood exporters to the united states is a. china b. brazil c. mexico d. saudi arabia

Hemoglobin is the compound in red blood cells that carries oxygen to the body. the distribution of hemoglobin in women in g/dl of blood is approximately normally distributed with mean 14 and standard deviation 1. too little hemoglobin, and you're anemic. 2. too much, and (unless you live at high altitudes), you can have other problems.

What are some aquatic organisms that live in cold water temperatures?