Ecology CRASH COURSE Part 2 Questions

What is the principle that states matter is neither created nor destroyed?

• Law of Conservation of Energy

• Law of Conservation of Matter

• Law of Thermodynamics

• Law of Gravity

What is the primary role of precipitation in the water cycle?

• To form clouds

• To return water to the earth

• To absorb water into plants

• To create groundwater

Which of the following is NOT a part of the water cycle?

• Evaporation

• Transpiration

• Photosynthesis

• Condensation

What happens to the shells of marine organisms when they die?

• They become fossil fuels

• They release CO₂ into the atmosphere or water

• They turn into oxygen

• They remain unchanged

What is the significance of CO₂ in the carbon cycle?

• It is a waste product

• It is a greenhouse gas

• It is a nutrient

• It is a solid

How do phosphates return to the soil in the phosphorous cycle?

• Through precipitation

• Through decomposition

• Through uplifting of rock

• Through weathering of rock

How can phosphorus be reused in the ecosystem?

• By being absorbed by the atmosphere

• By being absorbed by plants

• By being dissolved in water

• By being converted into nitrogen

What happens to phosphorus when plants absorb it?

• It is released into the atmosphere

• It is passed along to other trophic levels

• It is stored in the roots

• It is converted into nitrogen

What is the primary form of nitrogen found in the atmosphere?

• Ammonium (NH₄⁺)

• Nitrites (NO₂⁻)

• Atmospheric Nitrogen (N₂)

• Nitrates (NO₃⁻)

During which process do bacteria produce ammonia by breaking down organic matter?

• Assimilation

• Ammonification

• Nitrification

• Denitrification