Fossil and geological evidence indicates that there have been _____ mass extinctions during the past 500 million years.
A. 2
B. 5
C. 8
D. 12
E. 20
Answer: B
You might also like to view...
Because the Dutch had used Indonesia largely for its tropical crops and invested little in transportation, health, or education in this country, Indonesia was extremely poor when it gained its independence from the Netherlands in 1949
Indicate whether the statement is true or false
What features would you look for as evidence that a shoreline is submergent or emergent?
What will be an ideal response?
The following diagram illustrates the Carbon Cycle. Each arrow represents the transfer of carbon from one component of the Earth system to another. For example, arrow 1 represents the transfer of carbon from the biosphere to the atmosphere. Match the answers below to the number on the diagram.
Match the lettered answer to number 8 on the diagram.
A. Respiration B. Photosynthesis C. Rock formation D. Decay E. Fossil fuel formation
What is the difference between hard water and soft water? What problems could each type cause in your home?
What will be an ideal response?