For questions four plants make their own food which is oxygen gas. This oxygen gas, is an important part of the air, the gas that plants and animals must live on. When people breathe, it is oxygen that we take out of the air to keep our cells and bodies alive.
Answer: Here is the complete sentence: An advantage of a ................................ is that the complete system HAVE SPECIALIZED REGIONS THAT PERFORM SPECIALIZED FUNCTIONS.
Explanation:
The digestive system is a set of organs that work together to break down food molecules into the forms that the body cells can absorb and use. The gastrovascular cavity is an organ of digestion and circulation in some primitive living organisms. Gastrovascular cavity is an unspeciallized organ with two openings, one of the opening is the mouth while the other one is the anus, through which wastes pass out of the body.
The major advantage of complete digestive system over gastrovascular cavity is that the digestive system comprise of specialized organs which perform specialized functions. For instance, the stomach is a specialized organ that is responsible for churning of food during digestion, it also perform other specialized functions.
1. Conduction
The transfer of energy through direct touch (collision of molecules)
2. Convection
The process in which heat energy is transferred through the movement of matter (ex:air or water)
3.Radiation
The transfer of energy in particles or waves
4. Greenhouse effect
The process in which absorption of short wave by the atmosphere heats up a planet.
Answer:
The answer is Segmented ganglia, a dorsal nerve cord and a ventral nerve cord.
Explanation:
In case of invertebrates like annelids and arthropods the nervous system is not so well developed. The nerve cells are not organized into brain but they have collection of nerve cells which makes ganglia. Annelids are both externally and internally segmented whereas arthropods show only external segmentation. The presence of ganglia in each segment gives the name segmented ganglia. Along with this they have nerve cord running from anterior to posterior end. The one present on the dorsal side is called dorsal nerve cord and the one present on the ventral side is called ventral nerve cord.
Answer: The reason the hybrid car is better for this is that it is electrically powered to run or at least some of them. therefore thanks to this people can drive without affecting the ecosystem like with petroleum or fossil fuels.