True, though the Hadean period is one exception.
Answer:
I believe it is A, but I could be wrong.
Explanation:
I think this, because when it says, "Other, less useful, versions of the genetic code were eliminated gradually throughout the course of evolution", I think it referencing to the fact that all animals and etc, are made up of common codes, and how over time, through evolution, certain codes were eliminated, because creatures were evolving.
Answer:
Schooling
Explanation:
Schooling is a collective activity that is far more prevalent in bony fish than cartilaginous fish.
Schooling is a term used to describe collective activity in fish. For example, if a group of fish swims in the same direction in a coordinated fashion, they are schooling.
- Fish schools are one example of animal aggregation.
Answer:
No. They will need to repeat their experiment several times, since the weather and times were different both days.
Explanation:
When a scientific experiment is conducted, one independent variable shall be changed in each experiment at a time so that the results of the experiment are authentic and we can easily determine which independent variable caused a change in the dependent variable.
If more than one independent variable is changed in the same experiment, then it will be difficult to interpret that which variable caused the change.
<u><em>Similarly, Maria and her brother need to repeat their experiment several times with just changing one variable at a time. </em></u>
Answer:
Yea they are really easy question no need to worry.
Explanation: