Answer:
This is not a question we can answer, this is a question only you can answer because it is asking for your personal belief on wether alien's exist outside of earth or not.
Explanation:
A sperm and egg combine to make a zygote. (or fertilized egg)
So, the answer would be "A".
I hope this helps!
~cupcake
Control group
Explanation:
The control group usually serves as a reference for comparison during a scientific investigation.
What is a control group?
- The control group is an experimental group not being tested for.
- it does not receive any modification or design from the scientist.
- It is designed as a reference for the main experiment
- Often times, it is isolated from the main experiment and the independent variables cannot influence the outcomes of the experiment.
Learn more:
Controlled experiment brainly.com/question/1621519
#learnwithBrainly
Answer:
Adaptation
Explanation:
In this case predation is the selection pressure for natural selection in the mice population. Because the black mice stand out against the brown sand dunes backdrop, they are easily located and predated on by the hawks. Therefore, black mice have a lower chance (compared to brown mice) to reach reproductive age and pass down their genes to the next generation. With subsequent generations, therefore, there will be more and more brown mice in the population.