Geologists cannot yet predict earthquakes because
a. they have too much data.
b. they can’t be sure when and where stress will be released along a fault.
c. they need to know where all past earthquakes occurred.
d. there are too many faults to monitor.

The right answer is B

The goal of seismic prediction is to anticipate seismic risks by predicting the amplitude, location and date of earthquakes.

Seismic prediction remains a difficult and uncertain task, almost impossible even in the face of scientific efforts. Moreover, predicting the damage would not prevent them from taking place.

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: