96% of all organisms are composed of the elements the number of an element has is what defines that element. the atomic mass is the isotopes have the same but different

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

What function does a limb serve in each animal how are the limb bones of the four animal similar based on the similarities what can be inferred about the evolution of the poor animals

What in scientific term why the salty popcorn causes this thirst