L2
讲座
1. What is the lecture mainly about?
The benefits of studying termites and their mounds
The effects of mining for minerals on termite habitats
Types of minerals termites use in constructing their homes
New methods for researching termite behavior
2. How does bioturbation by termites affect soil?
It breaks down minerals into smaller particles.
It makes soil less susceptible to erosion.
It reduces the nutrients available to other organisms.
It transfers minerals from one soil level to another.
3. What points does the professor make about termites and moisture?（多选题）
Termite mounds are built to retain moisture.
Moisture levels affect which minerals are stored by termites.
Ingesting metals lowers the moisture in termites’ bodies.
Termites’ deepest tunnels are made in search of moisture.
4. Why does the professor discuss the size of termite mounds?
To explain how researchers chose the location for a study
To emphasize a difference between termite species
To express admiration of termites’ building ability
To refute an assumption made by minerallexplorers in the past
5. What does the professor imply about minerals found within the bodies of inside
The minerals come from too broad an area to indicate soil composition
The minerals are stored the same way in both ants and termites.
The minerals are an additional source of geologic information.
The minerals are purer than minerals found in termite mounds.
6. Why does the professor say this:
To point out that the extent of the termite’s diet has been overstated
To acknowledge the destructive potential of termites
To emphasize how little is known about what termites eat
To suggest that termites found in human structures differ from those mounds
