Part A What is a central idea of "We're Going to Mars!"?

Conditions on Mars are changing to become more suitable to support life.

Studying Mars will help scientists learn more about Earth.

Life on Mars will be uncomfortable because Mars is too cold for humans.

Studying Mars should take priority over other scientific studies.
Question 2
Part B

Which detail best supports the answer to Part A?

“Also, studying sediments, rocks, and soils, as well as volcanoes and meteoroid impact sites, can help scientists study details of Earth’s evolution.”

“However, evidence suggests that life may have existed in bacterial form billions of years ago.”

“If SpaceX, a private company dedicated to space travel and exploration, has any say in it, humans will reach Mars as early as 2022.”

“It would be an important moment in the history of humanity, ranking up there with the discovery of ‘The New World’ and the moon landing.”

3one of the biggest impacts a building has on earth is the energy it uses. currently, most of the world’s energy comes from burning fossil fuels. these fuels are dirty and when they are burned they pollute the air and water. one way to burn fewer fossil fuels is to reduce the amount of electricity a building has to use. passive solar heating, which uses heat from the sun, reduces the amount of fossil fuel used to heat buildings. passive solar heating requires a south-facing wall made of glass. when sunlight shines through the wall, it is collected and used to warm the building. another way green buildings reduce their electricity use is to install other energy sources. for example, some green buildings use panels that turn energy from the sun into useable electricity. which is the best summary of paragraph 3? a) fossil fuels are dirty and pollute the air and water. most of the world's energy comes from these fuels. b) the biggest problem of buildings is that they use fuel that is dirty for heating. they need to do something to be more energy efficient. c) panels that turn energy from the sun into electricity and passive solar heating can stop the burning of fossil fuels which pollute air and water. d) since fossil fuels are dirty and pollute the air and water, other technologies that pollute less and produce energy have been developed like solar energy and green buildings.