Question

1. what protects the earth from the harmful blasts of solar radiation from the sun?

a. its temperature.
b. its magnetic field.
c. its moon.
d. its oceans.

1. what makes planet earth habitable?

a. it has comfortable distance from the sun.
b. it has atmosphere that protects from radiation.
c. it has liquid water.
d. all of the above

1. what makes planet earth habitable?

a. it has comfortable distance from the sun.
b. it has atmosphere that protects from radiation.
c. the atmosphere holds carbon dioxide and other gases.
d. all of the above

1. according to the heterotroph hypothesis, in addition to water, the raw materials used to produce the most primitive life - forms on earth were probably

a) hydrogen, oxygen, and nitrogen
b) hydrogen, methane, and ammonia
c) nitrogen, carbon dioxide, and oxygen
d) carbon monoxide, ammonia, and oxygen

Explanation:

1. Earth's magnetic field, known as the magnetosphere, deflects most of the solar - wind particles, protecting the Earth from harmful solar radiation.
2. Earth's habitability is due to multiple factors. Its distance from the sun gives it a suitable temperature range, its atmosphere protects from radiation, and it has liquid water.
3. Similar to question 2, Earth's habitability is attributed to its distance from the sun, atmosphere that protects from radiation, and an atmosphere that holds carbon - dioxide and other gases which are important for the greenhouse effect and life processes.
4. According to the heterotroph hypothesis, hydrogen, methane, and ammonia were likely the raw materials along with water to produce the most primitive life forms on Earth.

Answer:

1. B. Its magnetic field.
2. D. All of the above.
3. D. All of the above.
4. B. hydrogen, methane, and ammonia