Answer:
1.) D. algae
2.) A. mutualism
3.) D. They have no flowers, stems, or roots.
4.) A. Lichens and Mosses
Explanation:
Given that,
The speed of a wave, v = 200 m/s
Wavelength, 
We need to find the frequency of this wave. The relation between wavelength, frequency and the speed is given by :
So, the frequency of this wave is 100 Hz.
The answer is fetal alcohol syndrome. It is a condition that an infant could experience when the mother who is pregnant is ingesting alcohol during her pregnancy. It could cause defects and disorder to the infant that it will make the infant to be born in a normal way. This could be classified as to mild or severe depending on the situation.
Answer: Option B.
Damage to the sun
Explanation:
Damage to the sun is not a negative way we use science because the sun is very far away from the Earth. The sun is so far away that light from the Sun, traveling at a speed of 186,000 miles (300,000 kilometers) per second, takes about 8 minutes to reach us. This means that The distance from the sun to the Earth is far and it's difficult for science to have negative effects on the sun. The sun is not easily accessible and sun damage is not easily affected compared to pollution, climate Change, overuse of resources which it's as a result of science negative effect.
