Nthe semi arid regions of china, the country's inhabitants have practiced water harvesting for generations. water harvesting is the process of collecting rainfall and/or runoff for later use. how does this water conservation method the environment?
a) water harvesting causes drought-like conditions the rest of the year.
b) keeping the water for later use leads to over farming and land degredation.
c) water harvesting causes the area to become uninhabitable the rest of the year.
d) by collecting runoff during the rainy season much of the land degredation caused by water erosion is prevented.

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation:

the answer is: reproductively

i think i spelled it wrong lol

anyways hope i

-lavira: )