Answer:
A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does. In a chemical reaction, the atoms and molecules that interact with each other are called reactants. In a chemical reaction, the atoms and molecules produced by the reaction are called products.
Explanation:
Each DIPLOID organism typically hasto two different alleles for each gene.
Answer:
The proportion of oxygen went up because of photosynthesis by plants. The proportion of carbon dioxide went down because: it was locked up in sedimentary rocks (such as limestone) and in fossil fuels. it was absorbed by plants for photosynthesis.
Explanation:
Fertilization occurs in the Fallopian tubes. The egg cell is released from the ovaries and travels through the Fallopian tubes where is meets the sperm cell. This is when fertilization occurs.
Answer:
c lunar and solar eclipse
Explanation:
