I think it is control group
We hear thunder after we see the lightning bolt because of the slower speed of sound
Answer:
(C) The molecules essential to life today could have formed under early Earth conditions.
Explanation:
The results of Miller's experiments better support the hypothesis that molecules essential for life today could have formed under early Earth conditions. That's because Miller, in his hope, created an environment very similar to primitive earth. This environment consisted of water vapor, hydrogen gas, methane and ammonia, but this environment was able to synthesize organic molecules after receiving a discharge of electric sparks, which can be seen in the theory that explains the origin of life on earth.
The earth's atmosphere had a different composition from today. It is believed to be composed of methane, ammonia, hydrogen and water vapor. Strong lightning strikes and sun-radiated ultraviolet rays would have promoted a wide variety of chemical reactions in the atmosphere, leading to the emergence, among others, of simple organic molecules such as alcohols, amino acids and sugars.
The correct option is B.
Erosion refers to the gradual removal and destruction of the earth surface by agents such as water and wind. Water erosion, especially fast moving water is a greater force of erosion than wind erosion because it has greater energy and therefore can cause more damages.
The synovial joints are the joints found in the human body that allow movement of the body parts. These joints have cavity that are filled with synovial fluid. There are six different types of synovial joints.
The first carpometalcarpal joints are example of saddle joints. The carpometacarpal joint is formed between carpal bone and first metacarpal bone of the thumb.