True/False: Mark the following statements as true (T) or false (F). If the statement is false, correct it to make it a true statement. a. Gametes result from two rounds of cell division. b. Meiosis results in diploid cells. c. Homologous chromosomes overlap at points called chiasmata or crossover. d. The DNA replicates prior to the start of meiosis II.

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Can someone i have no idea of how to do this.