Multiple choices :
A. test for chemicals that might poison fish and cause algae to grow
B measure the dissolved oxygen content in pond-water samples
C look for sources of pollution that may be affecting the pond
D measure the amount of light at various levels in the pond
Answer;
D. measure the amount of light at various levels in the pond
Fish in the pond feeds on the algae that grows in the pod.
Therefore; death of fish in the pond caused a large increase in algae populations.
Measuring the amount of light in the pond would not tell the student what caused the death of the fish in the pond.
The square denotes male. One parent is recessive, so X must have at least one recessive allele. B is the right answer.
Answer:
The cell organelle, Mitochondria will be very abundant in the wing muscles of a hummingbird.
Explanation:
Mitochondria are known as the powerhouses of the cell. They are are membrane-bound organelles which are found within the cytoplasm of the cells. They are the site for cellular respiration in the cell. The take in nutrients and breaks them down to produce energy in the form of ATP.
Actively respiring tissues and organs possess an abundance of mitochondria which produces the energy required by these tissues and organs.
Since hummingbirds require a tremendous amount of energy to flap their wings so fast, therefore, mitochondria would be very abundant in the wing muscles of a hummingbird.
I think the answer is C because Geologists use seismic waves to locate an earthquake’s epicenter.
The dose should be adjusted to achieve and maintain therapeutic drug levels