3. when did rachel carson begin to see ominous signs of poisons in the environment? 4. what did rachel carson's book, silent spring, alert the world to? 5. what did rachel carson do after she saw ominous signs of poisons in the environment? 6. what did congress do after silent spring alerted the world to the environmental problems caused by pesticides?

When a scientific theory has been tested and proved by the scientific community, it becomes a law

What are the two largest greenhouse gases

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.