<span>The two ways through which the temperature regulation is done for the football player are sweat glands and blood vessels. Sweat glands are thick part of skin that is dermis produce the sweat that would evaporate pulling out the heat from his body. Blood vessels are also part of dermis make the blood travel through the muscles and make thus making the skin warm. This warmness from the blood makes the sweat glands react and follow the procedure. So like this they prevent the body from overheating.</span>
It's both! Scientists really can't agree on it.
Answer:
the picture is not loading when it dose mabey I can answer I have been waiting 30 mins for the pic to load
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.
Answer:
Birds, such as owls and eagles, have feathers and thin, hollow bones. Reptiles, such as snakes and lizards, have scaly skin and are ectothermic animals. Both possess a unique kind of egg called the amniotic egg.
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