Which of these best describes the mechanism of DNA replication

DNA replication in eukaryotes is multi-replicon i.e., it has many origins of replication. So multiple bubbles are formed and then fuse which results in speeding up the replication of long  DNA molecule. Inside the replication bubble, the Y-shaped replication fork is formed from where the replication process starts and proceeds bidirectionally.

Explanation:

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.