Answer:
B. Is what the scientists manipulate in the experiment.
Explanation:
The Independent variable is not dependent, or doesn't rely, on another variable in the experiment. So, it would make the most sense that they would manipulate the Independent so that they can watch and see how the dependent variable reacts to the manipulation, or the change, in the independent variable.
It's an sight observation you're using your eyes to see it it's one of your 5th sences
Answer:
Red blood cells are adapted to their function by:
1) They contain haemoglobin - a red protein that combines with oxygen. they have no nucleus so they can contain more haemoglobin.
2) They are small and flexible so that they can fit through narrow blood vessels.
3) They have a biconcave shape (flattened disc shape) to maximise their surface area for oxygen absorption.
Hope this helps! :D
Answer:
hey dad can i have some money
if he says no
then no
Explanation:
Answer:
Four cell processes that all living cells need energy for include:
Cell Division
Synthesis
Transport
Breakdown of Nutrients
Let me know if this helps!
