Answer:
A system that uses the sun's energy without requiring mechanical devices (pumps or fans) to distribute the collected heat are called solar system while radiator system uses fuel to heat the water. in active solar heating system, the SUN's energy used to heat water.
Answer: the lightest and the darkest skin pigmentations are equally common in the population
Explanation:
Answer:
Flagella is a locomotary organ of bacteria whereas cell wall is the outermost covering of plant cell
Explanation:
The answer is (1) !!
it is one direction, from sun to produces to consumer !!
Well, when there is earthquakes, the earthquakes move around most of the fossils into other places and other continents and rivers and oceans, so earthquakes move all the fossils.
