A scientific theory is a well tested explanation of a natural phenomenon.
People have thought that everything had went around the earth Our understanding of the universe has changed over time. Different civilizations have created different models to explain what the universe
is and how the universe began. The Greek astronomer Ptolemy
used measurements of the sky to create his geocentric model. This had the earth at the center and all the planets and the sun orbiting around it.
Answer:
B
Explanation:
Vanadium Oxide is a Catalyst for the contact process
And Catalysts are used to speed up the reaction rate, therefore the answer is "to increase the rate if reaction"
SIDE NOTE = catalysts are not used up in a reaction btw
gene therapy
Explanation:
Gene therapy, also called gene transfer therapy, the introduction of a normal gene into an individual's order to repair a mutation that causes a genetic disease.
Answer:
B.The cake rises as gas bubbles form in the baking cake preferably carbon dioxide
