Phosphorus is an essential nutrient for plants and animals. Phosphorus normally occurs in nature as part of a phosphate ion (PO4)3. As you can see from the diagram of the phosphorus cycle, phosphorus is a component of plant fertilizers. Two of the critical roles phosphorus plays in life on Earth is that it is a component of ATP as well as all

Q: a pair of homologous chromosomesa) always has the same genes and the same allows b)always has the same genes c)always has the same alleles d)never has the same genes

The hardy-weinberg principle is that genetic frequencies in a population? will remain stable from generation to generation will always be changing will not be affected by environmental changes are always in a 3: 1 ratio

Which sentences describe the logistic growth model? there are three different phases of the s-shaped curve. at first, growth is exponential because individuals are few and resources are plenty. this growth model occurs in a situation where resources are plenty and individuals are few to consume the resources. population growth decreases as resources become limited. when a population size reaches the carrying capacity of its environment, the population growth slows down or stops completely. the model looks like a j-curve.