Answer:
Explanation:
The dependent variable in this case is the valuable whose value is dependent on the other variables. In this context, the dependent variable is the rate of diffusion of the molecules...how fast or how slow which is depends on the size of the molecules.
The independent variable is the usually has a direct effect on the dependent variable which in this case is the size of the molecules...how small or big...will affect their rates of diffusion.
Answer:
The keystone species is the wolf.
Explanation:
Every species of organism is important to the ecosystem, so if just one species gets extinct for whatever reason there will be consequences for the other species. How big the consequences will be, depends on the species and on how big of an effect it has on the ecosystem. Some species have relatively small importance, while some have huge importance, and the ones that have huge importance are called keystone species.
The keystone species have such big importance to an ecosystem that with their presence everything is under control, but if they go extinct then the ecosystem suffers badly and changes dramatically. In this case, a keystone species is the wolf. The wolves control the elk population, which in turn means that there is no shortage of food for the elk and they don't damage the young trees. By not damaging the young trees, they grow, so there is a much larger area covered by forest. More forest means less erosion, the water of the streams is better controlled, and there is less meandering. If the wolves are out of the picture, as they were for some time, the picture is totally opposite.
Archaea have more complex RNA polymerases than Bacteria, similar to Eucarya. Unlikebacteria, archaea cell walls do not contain peptidoglycan. Archaeahave different membrane lipid bonding from bacteria and eukarya. There are genetic differences
Answer:
its A
Explanation:
An autotroph or primary producer is an organism that produces complex organic compounds (such as carbohydrates, fats, and proteins) using carbon from simple substances such as carbon dioxide, generally using energy from light (photosynthesis) or inorganic chemical reactions (chemosynthesis). Autotrophs do not need a living source of carbon or energy and are the producers in a food chain, such as plants on land or algae in water (in contrast to heterotrophs as consumers of autotrophs or other heterotrophs). Autotrophs can reduce carbon dioxide to make organic compounds for biosynthesis and as stored chemical fuel. Most autotrophs use water as the reducing agent, but some can use other hydrogen compounds such as hydrogen sulfide. hope this helps :D
Answer:
A
Explanation:
Because when particles move slower they start getting closer to one another, the attraction between them puls them toward each other.
