Which organisms convert nitrogen into a form that ia usable by humans

a. plants

b. bacteria

c. omnivores

d. algae

The tour of oxygen molecules throughout the circulatory and respiratory system?

The mass extinction that was most likely caused by the formation and retreat of glaciers was the ___ extinction A. Cretaceous - Tertiary B. End Triassic C. Permian - Triassic D. Late Devonian E. Ordovician - Silurian

Based on your experiments, what conditions would most likely allow two phytoplankton species competing for the same resources in a chemostat to coexist for extended periods of time?

Name at least 3 uses for the sun's energy.

Which of the following best describes succession? Question 1 options: The evolution of species through natural selection to becomes different species over time. All of these are good descriptions of succession.

Who was the scientist that first discovered cells by using the microscope

The Tasmanian devil has 14 chromosomes in each of its somatic cells, 2n = 14. How many chromosomes would be present in a cell after anaphase of Mitosis?

What will a hypothesis become if it is supported by repeated experimentation

During energy transformations, sometimes energy is destroyed. is that true or false

Your patient has been diagnosed with right ventricular failure. Which of the following abnormalities is not a direct result of this problem Your patient has been diagnosed with right ventricular failure.