Which of the following organisms first introduced oxygen into Earth's atmosphere?

A. cyanobacteria

B. methanogens

C. early protozoans

D. plants

E. green algae

What type of resource is sunlight? A - recyclable only B - renewable C - nonrenewable D - recyclable and renewable

A visual defect caused by an irregular curvature of the cornea or lens, resulting in blurred vision: A. hyperopia B. myopia C. strabismus D. astigmatism

How do i find the blue or not blue in the pedigree table

A poll that tries to assess opinion simply by asking the same question to a large number of people

In the lab, it is important to recognize the meaning of safety symbols. Following an experiment that involved preparing slides of cells in meiosis, some of the lab materials were placed in a container with a label that had the symbol shown.

Example of the stimulus and responds in human

What might happen to cells that are exposed to high concentrations of sugar?

Why are the results of genetic crosses shown in punnett squares interpreted as probabilities, not certainties? give some specific reasons?

An electric clothes dryer draws 22 A of current from a 240-V wall outlet. How much power, in watts, does it use?

Which phase do you spell spend time making organelles and completing tasks such as producing proteins