The process of DNA replication is described. Identify the enzyme that participates in each part of the replication process. DNA partially unwinds as the hydrogen bonds between complementary bases are broken. This process is catalyzed by the enzyme

Helicase

Explanation:

DNA replication is the process in which DNA makes copies of itself.

The process of DNA  replication is supported by several enzymes.

The initial step of DNA replication is unwinding of double stranded DNA which is catalyzed by helicase enzyme. Helicase enzymes breaks the hydrogen bond between the  DNA strands and prepare them for replication process.

Hence, the correct asnwer is "Helicase".

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.