Question

can you answer these questions

Smallpox is a virus that causes a rash that then turns into painful blisters. The last known case of smallpox was in 1977. What is the best explanation for the eradication of smallpox?
People are exercising more than they used to.
Genetic testing determines who is more prone to smallpox.
There was an increase in antibacterial products.
An effective vaccine was developed.

Which is the correct order of processes that occur as water moves from a lake to a cloud and then back to Earth's surface?
evaporation, condensation, precipitation
condensation, evaporation, precipitation
precipitation , condensation, evaporation
evaporation, precipitation, condensation

Some animals shiver as a natural, involuntary response to their environment. Shivering generates heat. This is an example of which function?

reducing movement to regulate body temperature
reducing movement to regulate blood glucose
maintaining homeostasis by regulating body temperature
maintaining homeostasis by regulating blood glucose

Before the beginning of the Industrial Revolution, most peppered moths found in and around Manchester, England, exhibited light-colored wings speckled with black. After the Industrial Revolution, peppered moths with dark wings became predominant in the area.

mc019-1.jpgmc019-2.jpg

Which term best describes the change from more light-colored moths to more dark-colored moths?
competition
evolution
acquired
overpopulation

Aristo was riding in a car and noticed a pond that was covered in algal blooms due to excess phosphorus in the water. Which of these other features in the landscape could be the reason for the high levels of phosphorus?
many cars
cow pasture
solar panels
forest

Answer 1

1) An effective vaccine was developed.
- Global vaccination campaigns led to eradication of smallpox.

2) evaporation, condensation, precipitation
- Water evaporates from the lake, condensates into clouds, then falls as precipitation.

3) maintaining homeostasis by regulating body temperature
- Shivering is an involuntary response that generates heat to keep body temperature stable.

4) evolution
- The shift in moth coloration is an example of evolution by natural selection (industrial melanism).

5) cow pasture
- Runoff from livestock pastures (manure, fertilizer) is a common source of excess phosphorus that causes algal blooms.