Scenario Chart For Vocabulary Terms (Page 2 of 4) in pdf

NAME: _______________________

DATE: _______________________

Traditional “staph” infections are frequently cured with broad-spectrum antibiotics,

including a drug called methicillin. In recent years, a strain of staph bacteria has

emerged with a natural resistance to methicillin, and it can stand up to all but the

most powerful antibiotics.

Most mammals lose the ability to digest milk/lactose as they grow older. In human

NS, A

cultures where cows, sheep, and goats are milked for food, humans developed

genes for lifelong lactose tolerance.

The peppered moth comes in two varieties - a light-colored form and a dark-colored

form. In England prior to the Industrial Revolution, there were many more light-

colored moths than dark ones in the population. By the late 1800s, pollution from

NS, E, V

factories had deposited dark soot over England's trees and shrubs. It was found that

the percentage of dark-colored moths in the Peppered Moth population had

increased to 98%.

A particular plant is growing in a dense swamp habitat. Over the course of many

generations, a genetic mutation occurs which makes the roots of the plant less

susceptible to rotting. As a result, the descendents of that plant flourish in the wet,

NS, V

swampy environment and breed more, while plants with the original genetic makeup

are less successful in the environment.

Cheetahs and lions feed on similar prey; sometimes lions will steal prey items killed

by the cheetahs. A cheetah on the eastern plains of Africa kills a gazelle for food.

Before the cheetah can feed on its prey, a pride of lions comes in and eats the

gazelle.

One particular grasshopper in a field eats an unusually large amount of grass. As a

result, all of the other grasshoppers in the field are deprived of food.

In the 17

century, Dutch explorers landed on the island of Mauritius and

encountered a new species – the Dodo bird. The colonists proceeded to damage

the Dodo’s habitat, introduce new species that ate the birds’ eggs and young, and

overhunted the Dodo population. Within less than a century, the Dodo was extinct.

century sailors introduced goats to isolated islands. The goats thrived in the

new locations and overgrazed many of the islands. As a result, many of the

indigenous island species could not get access to the resources they were used to

and became extinct.

Learn more at

Scenario Chart For Vocabulary Terms Page 2