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Why are sponges cnidarians flatworms and roundworms limited to life in water or moist environments?
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Compare the typical nutrient in saltwater and freshwater environments?
it is limited
Are wetlands limited to inland freshwater environments?
yes. i had to do a report on it lol.
What job can you get if you're 12?
You may work for family members for a limited amount of hours in a limited environment. Example: you can not work in any hazardous environments.
For what are bituminous paints used?
These were used for corrosion protection in harsh environments. Very limited usage of these type coating now days.
Compare the typical limiting nutrient in saltwater and freshwater environments?
Phosphorus is the typical nutrient in freshwater, while nitrogen is the typical nutrient in saltwater.
Why do firefighters need reflective stripes?
They work in hazardous and active environments with often limited visibility. Under those conditions it is advisable to be seen easily in order to avoid the possibility of accident's.
Why is the life of palaeolithic human considered difficult and unsafe?
The life of Paleolithic humans is considered difficult and unsafe because they lived in harsh environments with limited resources. They had to hunt for food, often facing dangerous animals and unpredictable weather. Additionally, they had limited medical knowledge and technology, making them vulnerable to injuries and illnesses.
Why do v use shells in unix?
A shell is a command interpreter. This is not limited to Unix. The programs COMMAND.COM or CMD.EXE are also shells in the DOS/Windows environments. The program EXPLORER.EXE is also a shell, though with a graphical interface.
What is the hydra digestive system like?
Cnidarians and flatworms have a gastrovascular cavity. Cnidarians, such as the hydra, use their tentacles to move food through their mouth into their gastrovascular cavity. Then the cells lining this cavity excrete digestive enzymes that will start extracellular digestion and break the prey into smaller pieces. Any undigested remnants of the prey are expelled through the mouth opening. Like cnidarians, flatworms have a gastrovascular cavity with a single opening, but the cavity itself is highly folded. These folds greatly increase the surface area and extend throughout the body, bringing nutrients within the reach of all cells.The gastrovascular cavity of cnidarians and flatworms allows them to digest larger prey than they could with intracellular digestion. However, the effectiveness of a gastrovascular cavity in supplying the animal with nutrients is limited. Because there is only one opening to the external environment through which prey is taken in and remnants are expelled, the animals have to complete digestion of the first prey and expel its remnants before taking in another prey. With the evolution of a second opening in the digestive system, the digestive system became a digestive tract, or alimentary canal, making it a one-way system between mouth and anus. Food could now be taken in and processed continuously, providing the animal with more nutrients. Most animals-including vertebrates, arthropods, mollusks, round worms and earthworms-have this form of digestive tract.A one-way digestive tract is efficient because it allows the food to pass through a series of specialized regions. Such regions may be specialized for protein, fat, or carbohydrate digestion, making each step more efficient. Other regions may be used for food storage or for preparing the food for chemical digestion by physically grinding it into smaller pieces, which exposes more surface area to the action of digestive enzymes. These specialized regions eventually evolved into organs as parts of a complex digestive organ system. However, because nutrient dispersal, by the digestive system itself to all cells of the body, was no longer feasible with such a specialized digestive system (and animals became larger and bulkier) a separate cardiovascular system evolved to serve that function.
Where does bacteria produce energy to live?
bottom of the pyramid i think usually, I'm not too sure myself a teacher gave me this answer for the same question.
Can aquaman leave the water?
Yes, Aquaman can leave the water. He has superhuman strength, endurance, and the ability to breathe both underwater and on land. Aquaman is a skilled fighter and can survive in a variety of environments.
What is the difference between gears of war 2 limited edition and normal edition?
the limited edition comes with extras.At the game's release, Epic Games released a Limited Collectors Edition. Some of the notable differences are a steel case instead of the regular plastic case and an extra disc which contains artworks of environments and stages including Locust that never made it to the game. The disc also contains a time-lapse on the creation of the "Emergence" mural. -wikipedia
