The expression √27+√12
is equal to
Responses
√39
5√3
5√6
13√3
5√3
What can you conclude about steel consumption and population size in 1850?
(1 point)
Responses
The population was around 100 billion and steel consumption began.
The population was around 100 billion and steel consumption began.
The population was around 100 million and steel consumption began.
The population was around 100 million and steel consumption began.
Steel consumption was around 100 billion and the population was beginning to grow.
Steel consumption was around 100 billion and the population was beginning to grow.
Steel consumption was around 100 million and the population was beginning to grow.
Steel consumption was around 100 million and the population was beginning to grow.
Which is the most practical approach that can be done by anyone to reduce dependence on nonrenewable energy sources?(1 point)
Responses
using recycled materials in house construction
using recycled materials in house construction
using hydroelectric power
using hydroelectric power
saving electricity at home
saving electricity at home
using high power generators
saving electricity at home
Which is a direct result of increased consumption of metals?(1 point)
Responses
pollution from mining operations
pollution from mining operations
climate change from the use of metals
climate change from the use of metals
increased human population
increased human population
rising sea levels
pollution from mining operations.
Which natural resource is mined to produce a digital phone?(1 point)
Responses
plastic
plastic
coal
coal
natural gas
natural gas
copper
copper
What is the major cause of the greenhouse effect?(1 point)
Responses
soot from coal plants in the atmosphere
soot from coal plants in the atmosphere
carbon dioxide in the water
carbon dioxide in the water
soot from coal plants in the water
soot from coal plants in the water
carbon dioxide in the atmosphere