This topic contains a solution. Click here to go to the answer

Author Question: What do researchers use to directly measure the rate of productivity? A) Carbon-12 B) Biomass C) ... (Read 35 times)

jenna1

  • Hero Member
  • *****
  • Posts: 568
What do researchers use to directly measure the rate of productivity?
 A) Carbon-12
  B) Biomass
  C) Carbon-14
  D) None of these choices

Question 2

Waves tend to be parallel to the shore when they break due to the process of ____.
 A) diffraction
  B) reflection
  C) refraction
  D) reaction



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

coreycathey

  • Sr. Member
  • ****
  • Posts: 333
Answer to Question 1

C

Answer to Question 2

C




jenna1

  • Member
  • Posts: 568
Reply 2 on: Aug 22, 2018
Excellent


tandmlomax84

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

For a complete list of videos, visit our video library