Answer:
D texture of the jumping surface
Explanation:
An experiment can be defined as an investigation which typically involves the process of manipulating an independent variable (the cause) in order to be able to determine or measure the dependent variable (the effect).
This ultimately implies that, an experiment can be used by scientists to show or demonstrate how a condition causes or gives rise to another i.e cause and effect, influence, behavior, etc in a sample.
A control experiment can be defined as an experiment in which a condition assumed to be a probable cause of the effect is being compared to the same situation by the scientist without involving or using the suspected condition.
In an experiment , the variable being manipulated by an experimenter is known as an independent variable while the dependent variable is the event expected to change when the independent variable is manipulated.
Furthermore, a controlled variable refers to anything or quantity such as group, person, event, etc., that is held constant by the researcher during an experiment and as such is limited.
In this scenario, you are designing an experiment to find out which type of frog can jump farther. Thus, the controlled variable (variable that does not change) in this experiment is the texture of the jumping surface because it is where all the frogs would be tested on i.e used for the jumping test.
<u>Option 2: Freedom.</u>
The Nolan chart (1969) is a model that provides an alternative way to identify people's political view rather than the traditional way used (right wing or left wing). This map is based on two political views that people may support: economic freedom (the X-axis charts) and personal freedom (the Y-axis charts).
The chart is plotted across four quadrants on a Cartesian chart, the result is a diamond-shaped model: statist (low economic and personal freedom), conservative (low economic freedom and high personal freedom), liberal ( high economic freedom and low personal freedom), libertarian (high economic and personal freedom) and centrist (a mixed system balancing both economic and personal freedom with the need for some market regulation and personal sacrifice).
in certain situations this phrase is good to use. not in cases with mental problems, however it is good to expose people to something like that. When people having actual things that need attention, it is very unsafe and foolish to use this term. However if someone complains about other, quite miniscule things, it's better to use it then. Using it in the right context is key.
Common law marriage is an arrangement in which a couple live together in a committed romantic relationship but are not formally married.
The nervous system is similar to the endocrine system in that both work through chemical messengers to affect physiological responses. however, the nervous system has a less persistent response.
<h3>What is the nervous system?</h3>
This is the part of the body that is responsible for the coordination of the body. It is the part that has to help with the control of the body. It is referred to as the command center of the body. It is known to start front the brain to other parts of the body.
Hence we can say that The nervous system is similar to the endocrine system in that both work through chemical messengers to affect physiological responses. however, the nervous system has a less persistent response.
Read more on nervous system here: brainly.com/question/869589
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