Sally wants to know why the leaves of her plants are turning yellow. she suspects it is because the plants are not receiving enough nutrients. to test her hypothesis, she devises the following experiment. first, sally obtains four identical green plants. then, she places each plant in separate, but identical pots, with the same type and amount of soil. although sally gives each plant the same amount of water and sun exposure each day, she changes the amount of fertilizer placed in each pot. finally, she records the number of yellow leaves that she sees in each pot every day over the course of one month. what is the dependent variable in sally's experiment? a. the number of yellow leaves b. the type of green plant c. the amount of water d. the amount of fertilizer

In eukaryotes, genetic information is passed to the next generation by processes that include mitosis or meiosis. which of the explanations identifies the correct process and supports the claim that heritable information is passed from one generation to another? a. mitosis, followed by cytokinesis, produces daughter cells that are genetically different from the parent cell, thus insuring variation within the population. b. during mitosis, dna replication occurs twice within the cell cycle to insure a full set of chromosomes within each of the daughter cells produced. c. in asexual reproduction, a single individual is the sole parent and passes copies of its genes to its offspring without the fusion of gametes. d. single-celled organisms can fuse their cells, reproducing asexually through mitosis to form new cells that are not identical to the parent cell.

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases