#1
Which gas is primarily responsible for trapping heat in the Earth's atmosphere?
4 answered
#2
What is the term for the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll?
4 answered
#3
What is the term for the variety of life on Earth, including the diversity of ecosystems, species, and genetic variations?
4 answered
#4
Which of the following is a major cause of deforestation?
4 answered
#5
Which of the following is a characteristic of a keystone species?
3 answered
#6
What is the primary source of energy for most ecosystems on Earth?
3 answered
#7
Which of the following is a primary consumer in a typical food chain?
4 answered
#8
What is the term for the gradual process of change and replacement of the types of species in a community over time?
3 answered
#9
What is the term for the process by which water vapor turns into liquid water?
3 answered
#10
Which of the following is a non-renewable energy source?
1 answered
#11
Which of the following is an example of a renewable resource?
1 answered
#12
What is the term for the process by which nitrogen is converted into compounds that can be absorbed by plants?
1 answered
#13
Which of the following is NOT a greenhouse gas?
1 answered
#14
What is the term for the practice of using resources in a way that they are not depleted or permanently damaged?
2 answered
#15
Which of the following is a characteristic of an invasive species?
3 answered
#16
What is the term for the variety of different species within a given ecosystem?
2 answered
#17
Which of the following is an example of an abiotic factor in an ecosystem?
2 answered