C<span> because the Moon is closer to Earth than the Sun</span>
Snake and frog cant be on there cold blood crocodile are the same so the dog and parrot can live through the cold i think because there warm blooded
8. The stomata formed by a plant's guard cells are important because they allow the plant to.
Answer:
Scientists should sent a robot and observe the light penetration in the ocean water.
Explanation:
Robots in modern day have become a source of experiments for scientists. Many scientists believe that sending a robot is a better way for research as they can have different observation at different time for a certain period before making a final remark. The robots should be sent in ocean water and observations should be recorded on graph. These observations should be made in different timings to make the research more realistic.
Answer:
This question is asking to identify the variable in the experimental statement.
The eye chart is the CONTROL VARIABLE
Explanation:
An experiment consists of several variables to look out for in order to achieve any significant result. These variables are independent variables, dependent variables and control variables. Although independent and dependent variables are the major experimental variables, but control variables are also important.
A control variable is the variable that remains constant or unchanged throughout the experiment. Any change to the control variable will affect the dependent and independent variables. In this question, the eye chart is the CONTROL VARIABLE because it remains constant or unchanged. The same eye chart is used for the experiment.
N.B: The distance to the eye chart is the independent variable while the number of letters visible on the line is the dependent variable. Hence, changing the eye chart (control variable) will affect the distance and the number of letters visible.
