If a certain species of bacteria is capable of reproducing quickly enough that it could cover the earth in a one foot layer in two days, why hasn't this happened?
What will be an ideal response?
Limiting factors such as temperature, the availability of food, and abundance of predators keep its growth in check.
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Which is likely to happen to tropical forests that are heavily deforested?
A. The soil will dry out and the forest will become tropical grassland. B. The soil will not be able to absorb the excess water and the forest will become marshland. C. The climate will change and the forest will become tundra. D. The climate will change and the forest will become deciduous forest.
If you have enough energy to melt 1 gram of ice and then change it to vapor, then you also have enough energy to complete what other phase change for the same gram of ice?
What will be an ideal response?
The symbols for the elements in the period table are derived from three languages. Which of the following is not one of those languages?
A) English B) French C) German D) Latin
The first major wave of American settlement in Oregon's Willamette Valley was set into motion by which of the following?
A) Dawes Act B) Donation Land Claims Act C) Homestead Act D) Expulsion Act