Answer:
Chemical energy: plants use chemical energy when they convert the light into food (aka break it down into sugars)
Heat energy: Animals use heat energy so they wont freeze, by forming heat energy they will either be active (running, so on) or be somewhere that the sun hits them so that their bodies will convert the sunlight into heat
Electrical energy: Humans use electrical energy for just about everything like the lights, making food, using electronics, etc.
The answer is natural selection.
In natural selection, genotype variations that will increase the chance of survival and reproduction of some organism are preserved and will be inherited. Darwin's theory suggested that there are variations
among individuals in a population and that these variations will help individuals to survive.
Answer:
4) molecule, cell, organ system, population, ecosystem, biosphere
Explanation:
Various biomolecules such as carbohydrates, proteins, lipids, etc. together make the cells. Cells are the structural and functional units of life. A group of cells destined to perform specific functions makes tissues and various specific tissues together make an organ.
An organized group of tissues and organs that work cooperatively to perform a specialized set of functions is called an organ system. For example, the digestive system includes organs involved in the breakdown of nutrients.
A group of organisms of the same species that live in a defined geographic area at the same time make a population. Ecosystem refers to an interacting system including a biotic community and its nonliving, physical environment. The biosphere includes all of the parts of Earth where life forms exist and include the atmosphere, the hydrosphere and the lithosphere.
Answer:
Salinity is the <em><u>salt concentration</u></em> in water. Oceans salinity and temperature affect density of water, Higher the salinity denser the water and Lower the temperature denser the water.
Explanation:
As we go down in the ocean , temperature goes down and denser the water.
Less dense water will be on top and higher the density will be on bottom. Warmer water will be on top.
Salinity <em> increased</em> in ocean on evaporation of sea water and formation of ice in water. Weathering of rocks , formation of soil also add minerals and salt in ocean.
Melting of snow, ice in sea, addition of river freshwater and precipitation of rain <em>decrease </em>the salinity of ocean.
The herbivores eat the plants, the carnivores eat the meat and omnivore eat both. Predators eat prey. Scavengers eat organism that are already dead. Decomposers break down dead plants and animals into component parts, including nutrients
