A nonliving thing is a body or object that is inanimate or dead. It is anything that lacks or stops displaying the characteristics of life. One of the most significant characteristics and differences of a nonliving to a living thing is its lack of protoplasm, which is the living substance of cells. Without protoplasm, nonliving things are not capable of reproduction, growth, movement, respiration and metabolism.Know More
Nonliving things are classified into two primary types: things that were never part of any living entity and things that were once parts of a living thing. Any chemical element, such as gold, copper and silver, are examples of the first type. The first type can be divided into two classifications: artificial and naturally occurring nonliving things. Cars, pencils and bags are examples of artificial objects, while soil, air, water and stone are nonliving things by nature. Coal, which is formed when dead plant matter decomposes into peat, is an example of the second type of nonliving things. Paper, though nonliving, is made from trees.
Nonliving things also have unlimited duration of existence. While living things die and decompose, nonliving things such as rocks, mountains, air and water have existed for millions of years. They may grow, but they do so only by accretion, which is the process of growth by accumulating added layers of matter.Learn More
The fetus develops in the uterus, according to The Columbia Encyclopedia. Inside the uterus, a sac of amniotic fluid protects the fetus and allows it to move. The fetus gets its nutrients and oxygen from the placenta and umbilical cord.Full Answer >
Purple and green bacteria and cyanobacteria are photosynthetic. Photosynthetic bacteria are able to produce energy from the sun's rays in a process similar to that used by plants. Instead of using chlorophyll to capture the sun's light, these bacteria use a compound called bacteriochlorophyll.Full Answer >
Micrococcus luteus is a spherical bacteria of between 0.5 and 3.5 millimeters in length that grows in aerobic environments and forms yellow colonies when grown on agar plates. Micrococcus luteus is typically Gram-positive, though it can sometimes be Gram-variable depending on the strain. Gram-positive means that the bacteria stain purple when treated with Gram stain. This is due to differences in the cell wall compared to Gram-negative bacteria.Full Answer >
The most significant importance of the kingdom Protista is as primary producers, and thus food sources, for other organisms, as well as generators of oxygen. Single-celled oceanic algae, which are members of Protista, actually produce the majority of atmospheric oxygen via photosynthesis. Protista are also important as pathogens, consumers and decomposers. In a few cases, as with coral and termites, they are also crucial symbiotes.Full Answer >