He is incorrect because a catalyst is a substance that speeds up a chemical reaction so if there is no reaction to begin with a catalyst will not due anything.
Answer:
A space observatory is any instrument in outer space which is used for observation of distant planets, galaxies, and other outer space objects.
Answer:
The answer is D) It will allow scientists to make personalized medicine.
Explanation:
I used the context of the article where they stated "So for years, scientists have been trying to use cloning techniques to make embryonic stem cells that are essentially a genetic match for patients. The idea is that such a close match would prevent their bodies from rejecting the cells."
Answer:
we have took a almost extinct species and found a male and female and started breeding them so that species didn't go extinct and then we put them back out into the wild where their population could grow, hope this helps
