What is one negative effect of human influence on cycles of matter?   a. decreased soil nitrogen due to the harvesting of crops b. decreased amount of carbon in the atmosphere due to deforestation c. reased global warming due to the use of alternative energy sources d. reased amount of water that is available to freshwater ecosystems

Increased global warming due to the use of alternative energy sources (c)

Explanation:

the choices that we make impact the environment. Due deforestation there are less number of tress which results in less amount of oxygen being released in the atmosphere hence more carbon dioxide in the environment contributes to the climate change.

Carbon dioxide is the principal greenhouse gas that insulates the earth so more Carbon dioxide means a warmer earth.The burning of coal, oil and gas also contributes to global warming.The use of chlorofluorocarbons (CFC's) is a major cause too

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: