In 1628, English physician William Harvey established that the blood circulates throughout the body. Questions 34 and 35 are based on the following passage. The population was initially large, but when a predator was brought by sailors, the number of mongooses decreased. The mongooses died out since they ran out of food. The number of mongooses kept growing until the snake population was almost gone. The population was small before sailors brought more snakes, increasing the food supply for the mongoose. The number of mongooses kept growing until the people started protecting the chickens. The population was small before sailors brought more mongooses, increasing the gene pool. The snakes were almost gone, the mongoose population started decreasing. The few then multiplied, increasing the number of mongooses. The population was zero before sailors brought a few. The few then multiplied, and the number of mongooses on the island is still Which statement best describes the change in the population of mongooses on the island? the chickens didn’t taste as good to the mongooses. There were hardly any snakes left on the island because the relationship between the population of predator and prey. the ability of humans to change an ecosystem. Some remain on the island, but their number is now at equilibrium, kept in check by the availability of food.

However, people caught on and protected the chickens from getting eaten. The mongoose, facing a shortage of snakes, started eating chickens that people kept for their eggs and meat. At some point, there were hardly any snakes left on the island, and people started populating it. The mongooses were not native to the island and there was no predator on the island to keep the mongoose population in check. The mongoose population started increasing since there was ample food around. The population of snakes started decreasing since the mongooses were eating them. Sailors who came to the island brought and let loose mongoose, animals that feed on snakes.

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Questions 22 through 24 are based on the following passage.Īn island in the Adriatic Sea was overpopulated with snakes. The female bird determines the sex of the offspring by supplying it with the W or the Z chromosome. The female bird determines the sex of the offspring by supplying it with the X or the Y chromosome. The male bird determines the sex of the offspring by supplying it with the X or the Y chromosome. The male bird determines the sex of the offspring by supplying it with one of its W chromosomes. The male bird determines the sex of the offspring by supplying it with the W or the Z chromosome. Birds with a W chromosome and a Z chromosome are female. In birds, like in humans, a pair of chromosomes determines the sex. The baby always gets an X chromosome from the mother, so in humans, the father determines the sex of the baby by supplying it with either an X chromosome to make it female, or a Y chromosome to make it male. Females have two X chromosomes, while males have an X and a Y chromosome. In humans, a pair of chromosomes (one from each parent) determines the sex of the baby.

Practice ged math questions pdf