Without elements, the human body would be no longer able to function properly and humans could not survive. The most abundant element within the human body is Calcium. Calcium helps maintain bone strength and structure because bones are made largely of hydroxyapatite crystals, which are about 40% Calcium (Higdon, 2003). Calcium slightly helps the body to maintain a healthy body composition. In a study done on a Dutch population, a weak inverse relationship is shown between calcium and body mass index, meaning that as calcium dosages were increased, the body mass index decreased slightly (Boon, Koppes, Saris, & Van Mechelen, 2005).
The appearance of the sea turtle is that it has a somewhat flattened body. Also, it has a beaked head and the end of a short neck, their arms act as flippers, showing they are well adapted for swimming, however, are very vulnerable and awkward on land. Sea turtles have a large, streamlined shell. The average weight of mature sea turtles 150-420 lbs (68-190 kg), they no not differ between male and female. The average length of the carapace is 78-112 cm.
Large organisms require gas exchange systems to acquire all the oxygen they need, fish for example have special adaptations because there is less oxygen in the water than in the air. Water containing oxygen, enters the fish through its mouth and passes through the gills. Each gill is made up of thin plates called gill filaments, which give a large surface area for the exchange of gases. The gill filaments are covered in lots of tiny structures called lamellae, which further increase the surface area for gas exchange. During digestion nutrients are absorbed in the small
Without this bladder, the fish would have to constantly swim in order to not sink to the bottom. The ability to stay still in the water allows the fish to save energy with constant movement. Underwater Breathing Just as humans need oxygen to survive, fish do as well. However, water contains only 2% of the oxygen of air. This would make it much more difficult to
It’s an advantage because the worms can get what they need to survive, like food and oxygen. But, it is also a disadvantage because since their hydrostatic skeletons depend on hydration, where they live might not have the weight of fluid required for their body. Secondly, planarians and earthworms are different types of worms. Planarians are flatworms and earthworms are segmented worms. Planarians have the advantage of being able to asexually reproduce by regenerating, but earthworms are unable to do that, which is a
Having unique characteristics and low-maintenance requirements make good pets out hermit crabs, according to Lianne McLeod, writing for The Spruce. Hermit crabs have small and soft abdomens that they protect by living in empty snail shells. As they grow bigger, they must look for bigger shells, and owners of these pets must progressively look for larger shells. The two main species of hermit crabs found in the US are the Coenobita clypeatus, commonly named as the Caribbean crab, purple pincher crab, land hermit crab, tree crab or soldier crab and the Coenobita compressus or the Ecuadorian crab. Other species raised as pets in other parts of the world include the Australian land hermit crab and the strawberry land hermit crab.
Not only is good nutrition important for your physical health but plays a very important role in your dental health. The food you eat contributes to how your teeth develop. “Tooth development begins shortly after conception, usually between the sixth and eighth month of gestation and continues throughout pregnancy.” (pg. 1 Brown) Although it might take a large lack of nutrition to cause any damage to the tooth structure, a small amount of nutritional loss can make a tooth more susceptible to decay further on in life. “A good diet during pregnancy is always important.” (pg.
Are there advantages to swimming in school? The answer is yes. There are many different ways that swimming in schools can help fish. There is safety in numbers, so one way is that it keeps fish safe from bigger predator fish that might try to attack and eat them. Some fish swim so close together they blend in with each other and to a predator it would look like one huge fish, making the predator confused and scared so they swim away.
Amphibians, fish, and reptiles also use scent marking but not nearly as much as mammals or as documented by research. Directing urine at an object is frequently an important standard for distinguishing scent marking from simple elimination. (Wirant et al. 2006) The most common behaviors associated with scent marking, by means of urination, appear to be mating/reproduction and territoriality. Although olfactory cues play a significant role in other behaviors such as foraging and other forms of social communication, reproductive and territorial scent marking are more easily observed and less complicated to determine as the reason why this phenomenon is happening.
Coccolithophores are covered in coccoliths which are small calcareous plates made of calcium carbonate. This particular type of algae creates most of the calcareous deposits in the ocean. The last of the microscopic algae types, dinoflagellates, are the second most productive group of marine algae but they are not exceptionally vital geographically because their tests are biodegradable making them unable to be sustained as deposits on the ocean floor. Nutrients like iron, silica, phosphorous, and nitrate are highly needed by phytoplankton in order to continue the cycle of life throughout the ocean. Since they need light to survive, these tiny organisms must live near the upper portion of the ocean because that is where there is enough sunlight to power photosynthesis.