Answer:
B. Earth rotates on its own axis and revolves around the Sun.
Explanation:
The earth moves not only in one way but in two ways. It revolves around its axis and revolves around the Sun.
We do not notice it because we are on Earth and we turn together with it.
When the Earth revolves around its (imagined) axis, we call such a movement a rotation, and when it revolves around the Sun - a revolution.
Answer:
The correct option is c ( <span>sexual reproduction joins two cells that each have half the total chromosome number).
Reason:
Meiosis occurs only in reproductive cell in which the number of chromosome reduce to half. This phenomenon is very imoportant and essential for maintaining the number of chromosomes in species.</span><span />
Hi!
It's interesting to note that evolution is a <em>proven fact</em>. It is also interesting to note that a <em>theory </em>can be a <em>proven fact. </em>
So, with this in mind, the idea of evolution by natural selection is a <em>theory. </em>A theory cannot become a law!
It also isn't a hypothesis, as it is far beyond that. A hypothesis is just what you think will happen in an experiment.
This is a theory!
Hopefully, this helps! =)
