Rock pocket mice species in New Mexico exist as mostly tan in color and easily blend in with the limestone rocks and sand that cover the landscape of this region. About a thousand years ago there was a volcanic eruption which created lava flows on the surface which cooled and turned into a darker black rock color. The rock pocket mice living on the black rocks needed an adaptation to survive against visual predators like hawks and owls. Over multiple generations the population living amongst the black lava flow were observed to change to a black-furred color. Which statement below explains how this might have occurred?

Question 15 options:

Mice fur color cannot change, so they did not survive, rather a new species migrated to this area.

The change of fur color within the population over time became black as a result of the lava flow and allowed the mice to survive.

Mice fur color only changes when exposed to environmental factors such as UV radiation and pollutants.

The change of fur color within the population over time happened as a result of a mutation in one or more mice, allowing them to survive and pass along the mutated gene to future generations.

Turtle hatchling survivorship rate is low in many turtle species due to predation. amanda researched the predatory rate on a species of turtle eggs in the red river. the eggs were harvested from trapped turtles and the egg's cloaca film (reproductive discharge) was either washed off or left on once gathered. research suggests that predators use the female's cloaca scent to locate the eggs. the eggs were only handled when wearing gloves and then reburied along islands where the turtles were trapped. the nests were monitored by cameras and manually on foot and data on nest predation were recorded. a. based on the experimental design, what is the dependent variable? b. based on the experimental design, what is the independent variable? c. based on the experimental design, what is the control?

Did you know that a single bee would have to go to over 2 million flowers to make a single pound of honey?

Rease is an enzyme used by plants to break down urea (a nitrogen-containing compound) into carbon dioxide and ammonia. urease urea > > > carbon dioxide and ammonia ammonia is broken down by plants into a nitrogen source plants need to grow. thus, plants could not use urea as a nitrogen source unless it was first converted to ammonia. in soybean plants there are two different kinds of urease, one produced in the seeds and the other produced in the leaves of the plant. three types of soybean plants were used in a set of experiments: normal soybeans and two mutant strains, one lacking the urease in the seeds only (strain 1) and one lacking urease in the leaves only (strain 2). experiment 1 separate areas in a field were planted with normal, strain 1, and strain 2 soybeans. all types of soybeans appeared to grow, flower, and produce seeds equally well. there were no externally detectable differences among the strains. experiment 2 small pieces of plant leaves of equal weight were obtained from each type of soybean plant and separately placed on media in culture dishes. tissue growing in this way will become an unorganized clump of cells referred to as callus. to provide a controlled nitrogen source, half the tissue samples of each type were placed on media containing urea, and the other half of the samples were placed on media containing ammonia. after 30 days, the weight gain for each of the callus samples was determined. results are shown in the table below.