The correct answer is the independent variable is one that you manipulate, control, or vary to investigate its effects and the dependent variable that being tested and measured in an experiment .
The simplest way to determine which variable in your experiment is the Independent Variable (IV) and which is the Dependent Variable (DV) is to put both variables in the sentence below in the correct order. "A change in the DV is caused by the IV." It is impossible for DV to cause any change in IV."
Example: Independent and dependent variables You plan a study to see if changes in room temperature affect math test scores. The temperature of the room is your independent variable. You change the temperature of the room by making it cooler for half of the participants and warmer for the other half.
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Answer:
Organism having the suitable traits appears more in the population.
Explanation:
Natural selection is a non-random process in the biological traits becomes less or more common in the population due to the different rate of survival of their bearer or their differential reproduction.
Natural selection leads to evolution because those organisms are selected to survive and reproduce which are having those traits that are better suited to a certain set of environmental conditions over others. As a result, the number of these organisms increases over time and they appear more in the population.
So natural selection leads to evolution as an organism having the suitable traits appears more in the population.
It shows how a trait is past through family.
All are true. Virues are not living so antibiotics (anti = against + bio = life) will not work.
Surface tension<span> is the property of the surface of a liquid which allows it to resist an external force. It is due to the cohesive nature (stickiness and clumpability) of the water molecules. </span>Since water has a strong surface tension:
<span>1) </span>The surface tension of water provides the necessary wall tension for the formation of bubbles with water
<span>2) </span>It is responsible for the shape of liquid droplets, too
<span>3) </span>Small objects will "float" on the surface of a fluid, as long as the object cannot break through and separate the top layer of water molecules
If surface tension is weak, the reverse happens. Bubbles will come from round to spherical, small objects will not float, w<span>ater will fall as it is, without forming spherical droplets and will not immediately spread. </span>
