Question

Have you heard about wildfires in California? One reason may be inside the forests. It is the abundance of dead trees.

According to the US Forest Service’s aerial survey, 18 million trees died in California. This was just in 2018. The officials looked carefully to come up with the numbers. The survey, or study, was not done on land but in the air. This means the officials used airplanes, helicopters or other airborne means.

The dead trees are dangerous for many reasons. The decaying or dying parts could fall on anyone. Hikers, rangers, or firefighters face dangers. Dead trees could be like matchsticks for a wildfire.

While dead trees do not start the wildfire on their own, they still increase the chances of a fire spreading. For this and many reasons, dead trees need to be taken care of. Removing dead trees and planting new ones to replace them is the best solution.
Problem

What does survey mean in paragraph 2?

Answer 1

It means study, the passage says the survey, or study, was not done on land but in the air

Step-by-step explanation: