Kat has a fish tank with plants and fish native to the Amazon River. Kat began noticing he fish
swimming slower as if they were tired. Her fish tank has an indicator for dissolved gas
levels,
so she decided to look to see if there could be an issue. The following graph depicts the
levels
of dissolved oxygen and carbon dioxide in the tank.
Dissolved Gas Level Chart
• Oxygen • Carbon dioxide
20
15
10
Gas Level (mL)
5
10
15
20
Hours
What suggestion would you give Kat that would help stabilize the dissolved gas levels in
her
2uarium2

Joe is breeding cockroaches in his dorm room. he finds that the average wing length in his population of cockroaches is 4 cm. he chooses the six cockroaches that have the largest wings; the average wing length among these selected cockroaches is 10 cm. joe interbreeds these selected cockroaches. from earlier studies, he knows that the narrow-sense heritability for wing length in his population of cockroaches is 0.6. a. calculate the selection differential and expected response to selection for wing length in these cockroaches. b. what should be the average wing length of the progeny of the selected cockroaches?

The observations of hooke and van leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory? a. the cell theory stating that all living things are composed of cellsb. the theory of spontaneous generation, which held that life forms could arise spontaneouslyc. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsd. the germ theory of disease and causative agents

What pattern of migration do whales follow?