Aweather balloon at an elevation of 7,590 meters dropped 1,624 meters to collect data. at what elevation did the weather balloon collect data?

What point is the author trying to make by comparing the travel times of the first transcontinental railroad and the first transcontinental flight?

How does the mother defend her child to the old duck

Type the correct answer in the box. spell all words correctly. certain species of insects introduced accidentally in a forest are destroying all the douglas fir trees in that forest. the wood of these trees is extensively used for construction. in order to control the damage caused by these insects, the forestry department decided to introduce the moth caterpillar in the forest. these caterpillars are natural predators of the insects. which method did the forestry department implement to control the invasive species? the forestry department implemented a(n) control method.