<span>B. A secondary consumer that obtains its energy from the consumption of animals.
The red-tailed hawk is a secondary consumer because it feeds itself on primary consumers (those that eat plants, herbivores). Secondary consumers, by definition, </span><span>obtain their energy from eating other animals. Secondary consumers are also usually the ones that stand on the second and above rows of a food chain, being the plants at the bottom and the primary consumers just above the plants.</span>
No, even after several days of incubation, you shouldn't detect any symptoms of microbial growth in a sterile medium.
<h3>What is the microbial growth in the sterile medium?</h3>
The deliberate introduction of germs into a sterile growing medium is known as immunization. When there are no living creatures present, a substance is sterile; undesirable bacteria are said to be contaminated. The use of aseptic procedures helps keep growing media from being contaminated. Reduce the amount of time that cultures and growth media are exposed to the outside world. Clean the work area both before and after each use. Avoid breathing or touching the stock cultures or sterile culture media. Before used, loops, needles, pipes, and other items should be sanitized. The tube caps should be held in your hand while inoculating and not placed on the table while using tubes.
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Answer:
Starfish are also referred to as sea stars because of their star-shaped appearance. They are a part of the phylum Echinodermata and are related to sand dollars, sea urchins, and sea cucumbers.
Explanation:
Your heart is a pump that helps pump oxygen throughout your body. Your heart replenishes your blood with oxygen so that your cells can function properly. So the correct answer is D. muscle that helps to pump oxygen around the body.
Answer:
A control in an experiment is a replica used to confirm that the results or changes in the dependent variable/s are caused by the independent variable values or treatments. There are different kinds of controls according to the experiment, for example, no treatment can be applied, or for example in laboratory experiments, there are controls to check that the reactives function properly, making a replica with them but without the sample that is being measured.
Explanation:
