“Biome” and “ecosystem” are words sometimes used interchangeably to describe a specific type of environment, but this is an erroneous conflation. While the exact nature of the world’s biomes is a matter of some debate, they relate to one another in that they both break the globe down into smaller components based on features of the environment.
Biome Types
No official biome count exists. According to the University of Santa Barbara, some scientists only recognize aquatic, desert, forest, grassland and tundra biomes. Other lists include several more, distinguishing between temperate forests, tropical rainforests and tropical dry forests, for example. Others might break down the aquatic biome into freshwater, freshwater wetlands, marine, coral reef and estuary biomes. More distinct biome types include mountain or alpine biomes, island biomes -- often associated with the marine or ocean biome -- and the chaparral, which describes flat areas, rocky hills and mountain slopes.
Ecosystem Components
Ecosystems can be very small, sometimes no larger than a single puddle. An ecosystem is not a place like a biome is, but rather the set of interactions between the living things in that place. The way the plants, animals and other living organisms such as bacteria and funguses interact with the resources of that ecosystem -- water, sunlight and soil, for instance -- determine how the ecosystem functions.
Hope this helps. We went over this already. lol :0
Answer:
If humans were still hunting and gathering food instead of farming - taken into account that the entire population hunts and gathers food in the context of this question - the majority of people would have dark-skin complexions.
Explanation:
This is easily explained by a hunter-gatherer's way of living. Before humans learned to raise animals and grow crops, the majority of us were hunters and gatherers. Hunters and gatherers lived, and still continues to live, their lives very differently from how we are living at present. They'd spend hours hunting - as their name suggests - and catching food out in the wild, which exposes them to a higher amount of sunlight than our everyday way of living. To cope with this, evolution also played an important part in determining the survival of these people in the scorching sun - they evolved to producing high amounts of melanin. Melanin is a dark pigment that helps protect our skin cells against the harmful UV rays from the sun. Lighter skinned people have less melanin than darker skinned people, and when that extra melanin is produced, you'd see it as a tan. Hunter-gatherers produced high amounts of melanin, primarily because they had adapted to spending a large fraction of their time out in the open. The melanin acts like a built-in sunscreen for them, protecting them from getting skin cancers like melanoma.
It would be decreased significantly. The ETC makes 28 molecules of ATP so if it is disabled then you would only get your net gain of 2 ATP from glycolysis
By changing the controlled variable.
The nucleus of atoms are comprised of protons and neutrons.
