« previous next »

Author Question: Researchers are able to directly measure the rate of productivity in experiments using a ... (Read 48 times)

lracut11

  • Hero Member
  • *****
  • Posts: 536
on: Aug 22, 2018

Researchers are able to directly measure the rate of productivity in experiments using a radioactively tagged atom.
  Which isotope is commonly used?
  a. carbon-12
  b. carbon-13
  c. carbon-14
  d. nitrogen-14
  e. nitrogen-15



Question 2

During times of high productivity which plankton are notable for making the surface water appear milky or chalky?
  a. coccolithophores
  b. dinoflagellates
  c. zooplankton
  d. cyanobacteria
  e. diatoms



tanna.moeller

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Aug 22, 2018
Answer to Question 1

c

Answer to Question 2

a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Variation in the rate of evolution as a function of the strength of selection, assuming genetic drif Variation in the rate of evolution as a function of the strength of selection, assuming genetic drif
Increasing access to care for teen mothers is important because they have a higher rate of pregnancy ... Increasing access to care for teen mothers is important because they have a higher rate of pregnancy ...
A goniometer is used to measure range of motion of the patient’s arm. A goniometer is used to measure range of motion of the patient’s arm.
Metric System: Measure of Weight and Volume Metric System: Measure of Weight and Volume
High net primary productivity High net primary productivity
Inferring Productivity from Data on Output and Factor Accumulation Inferring Productivity from Data on Output and Factor Accumulation
Video: Digestive chemicals - types & enzymes

For a complete list of videos, visit our video library