Answer: nitrogen fixing bacteria
Explanation:
Nitrogen in the forms of nitrates, nitrites and ammonia are essential for the growth of the plants. Nitrogen present in the atmosphere is fixed in the soil by the nitrogen fixing bacteria. As plants cannot absorb nitrogen from the air. The bacteria convert atmospheric nitrogen into inorganic forms such as nitrates, nitrites and ammonia which are directly absorbed by the plants by their roots.
Answer:
1.Observation and description of a phenomenon. The observations are made visually or with the aid of scientific equipment.
2.Formulation of a hypothesis to explain the phenomenon in the form of a causal mechanism or a mathematical relation.
3.Test the hypothesis by analyzing the results of observations or by predicting and observing the existence of new phenomena that follow from the hypothesis. If experiments do not confirm the hypothesis, the hypothesis must be rejected or modified (Go back to Step 2).
4.Establish a theory based on repeated verification of the results.
Explanation:
The scientific method is a structured approach used in scientific research. It begins with an observation, then a hypothesis is formed, and experiments are conducted to test this hypothesis. Lab results reveal whether the hypothesis was correct, needs revision, or is incorrect.
The scientific method is a systemic approach used in science to find answers to questions or solve problems. It consists of a sequence of steps, each of which plays an integral part in the research process.
The first step is to make observations about the world around us. With observations, we form a hypothesis, which is a tentative explanation for the observed phenomenon. This hypothesis becomes the basis for the experiment, where we test to see if it holds true.
The lab results are findings obtained from an experiment. They provide detailed information on whether the hypothesis stands or not. They may either support the hypothesis, totally debunk it, or partially prove it. Analyzing and interpreting these results is key in scientific research. For instance, if your hypothesis is 'All plants turn towards the sunlight,' you would study several plant species over a period of time to either support or refute this hypothesis based on the results. If some plant species consistently do not turn towards the sun, your lab results would falsify the hypothesis, leading to its revision.
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anemia
leukemia
People missing one or more clotting factors will have hemophilia.
Reasoning: Hemophilia is a disorder in which blood doesn't clot as it should.
Anemia is a condition where the blood does not have enough healthy red blood cells.
Leukemia is a cancer of blood forming tissues at which it hindering the body's ability to fight infection.
Answer-
hemophilia
Reason-
It is a blood clotting disorder
uranium
B.
coal
C.
oil
D.
natural gas
Answer: Usually carry deoxygenated blood.
I got this one right on my test o(^U^)o
Explanation:
Answer:
Carry blood to the heart
Explanation:
B.All cells that currently exist have originated from pre-existing cells.
C.Cells are the most basic structural and functional unit of life.
D.All cells possess DNA enclosed within a nucleus.
Answer:
C
Explanation:
Answer:
the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.
Explanation:
Answer:
90 percent sure the answer is A