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Elza [17]
3 years ago
14

Importance of using hand lens in classification of organisms​

Biology
1 answer:
Leto [7]3 years ago
8 0

Answer:

hand lens is used to make small object to appear larger hence visibility is easily attained

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Look at the picture. Identify 3 safe behaviors and 3 unsafe behaviors.
Ludmilka [50]

Answer:

Unsafe: Boy in top right using the microscope near the window

Unsafe: boy in the front saying oww.

Unsafe: boy behind the boy saying oww hitting another kid over the head.

Explanation:

I had this exact assignment two years ago, however, those are all that I can remember, and it is very hard for me to see what is going on, so I am sorry that I could not be of more help.

4 0
3 years ago
The moon outside is very large, but you cannot see all of it. The calendar shows that the moon was invisible just less than two
Paladinen [302]
Full moon.
Since it was basically invisible that means it was a New Moon, and within that two weeks it should be full.
3 0
4 years ago
Use the scenario to answer the question.
soldier1979 [14.2K]

The independent variable would be <u><em>a. concentrations of ethylene spray</em></u>

<u><em /></u>

In virtually all scientific investigations that seeks to establish a cause-and-effect relationship, there are usually two main variables involved:

  • <u>Independent Variable: </u>This is the variable that is manipulated by the researcher to cause or establish the extent of the effect it will have on the dependent variable that is being studied. It is the cause<em><u>.</u></em>
  • <u>Dependent Variable:</u> This is variable that is measured by the researcher. It is the effect which is dependent on the independent variable.

In the scenario given, <em>different concentrations of ethylene spray</em>, is what the researcher manipulates, while <em>the length of ripening time, </em>is what is measured by the researcher.

The <em>the length of ripening time </em>is dependent on the <em>different concentrations of ethylene spray. </em>Therefore:

  • the length of ripening time is the dependent variable
  • the concentrations of ethylene spray is the independent variable.

Learn more about dependent and independent variables here:

brainly.com/question/23700645

4 0
3 years ago
The _____________ hypothesis about hominin bipedalism states that energy-efficient walking on two legs arose so that hominins co
Harman [31]

Answer:

Patchy Forest

Explanation:

The Patchy Forest  hypothesis about hominin bipedalism states that energy-efficient walking on two legs arose so that hominins could search for food that was dispersed as a result of climatic changes at the end of the Miocene.

I have also done this before!

5 0
3 years ago
A 12-year-old child sustains a moderate burn injury. the mother reports that the child last received a tetanus injection when he
Phoenix [80]
The nurse should administer an injection of postexposure prophylaxis for tetanus. Tetanus is a toxic substance produced by a bacterium that cannot survive air (oxygen) exposure, that is why deep wounds are more vulnerable to tetanus. A moderate burn injury is considered an open dirty wound, therefore the patient should be protected from tetanus.
There is a vaccine for tetanus, that provides immunization from this disease, but it needs to be repeated every 10 years. However, in cases where there is an open dirty wound, the vaccine is believed to be inactive if it was not done within the last 5 years.
In this case, the child will not receive the tetanus vaccine, but an injection of active immunization, which acts much faster, but does not last as long as the vaccine. 
6 0
3 years ago
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