The blood carries oxygen from the lungs of the respiratory system to the body’s cells, and take carbon dioxide from the cells to the lungs. The tissues from the circulatory system makes up the heart and blood vessels, which are part of the muscular system. Finally, the nervous system sends signals from the brain to the heart for it to pump blood throughout the body. By studying the circulatory system, and following the rules of the levels of organization, we know that the system is made up of organs, such as the heart and blood vessels. The organs are made up of tissues working together, such as the smooth/cardiac muscle tissues and blood.
The Kermode Bear The Kermode Bear is a different kind of black bear because it has a gene that normal black bears don’t have. This bear was mentioned in a book called Touching Spirit Bear.
The journey took 62 days, and spread over 745 miles. Why it Migrates It was shown that the Hammerhead shark mainly migrates when it is following food, such as the Mahi-Mahi. Life Cycle Hammerheads are on their own from the start of birth, so much so, that when they are born, they swim away from their mothers to avoid being eaten.
However the expected lifespan of one is about 15 years. If the largemouth bass is in captivity, they usually get to be about 11 years old. (Boschung, et al., 2004) They usually prefer to live in shallow that is no deeper than three meters. Although sometimes you may find some of them living in the deeper part of the water.
These were the most numerous among the Native when the first contact with the Europeans was made. Grouping divisions are based on language differences, as well as in survival methods and technological skills. The Inupiat and the Yupik, known as the real people, continue to hunt and gather in communities. They subsist on both sea and land resources.
Skeletal System. The skeletal system of the Northern Pintail has many advantages over some of the dabbling ducks the Pintail co-exist with. The bird has hollow bones all over its body to reduce weight, in return helping with flight. On the note of flight, the hinged wing bones are some of the least dense bones
Ecology and behaviour The southern right whale (Eubalaena australis) is a medium to large baleen whale, reaching a maximum length of 17.5m. Colour patterning is variable, ranging from black to grey-brown (Harcourt et al. 2012). Distinguishing features include a rotund body with no dorsal fin and callosities (caused by colonised cyamids, small crustaceans, on keratinised skin patches) on the head (Harcourt et al. 2012). Each individual has a unique callosity pattern that occurs a few months after birth and can be used to identify individuals in research studies. The southern right whale gives birth approximately every three years.
It is called the Velella, also known as a Sail by Wind, and it tends to float atop the water instead. The velella is different from most cnidarians in the way that it floats. It is sometimes thought of as being a mini “portuguese man-of-war,” but this description is incorrect because the “man-of-war” is actually a colony of cnidarians while the velella is a single polyp. Like most cnidarians, it has radial symmetry, which means that no matter which way you cut it in half, when looking from the top, you should get two equal pieces.
It’s believed to have been between forty to seventy feet long and evolved from the Cretolamna appendiculate. They were only alive for the short period of 16 million to 1.6 million years ago, in the Cenozoic period. They lived in warm waters and most likely preyed upon whales. Megalodon teeth were found in Africa, Australia, Europe, Japan, India, and the North and South Americas. Based on its characteristics, the Megalodon and the Great White sharks are related, but are not direct descendents.
The monk seals are a rare tropical animal that lives on the Caribbean and the Hawaiian Islands. Monk seals live in warm waters and spend about two-thirds of their time at sea. However, they also spend time on land as they breed and carry-out their “pups.” Coral reefs provide the seal as a great habitat for them to dive, swim, and for food such as fish. It may seem that monk seals spend most of their time at sea, but they also love to rest on shore on the beaches.
They have sacrificed everything, they drag themselves through a world of suffering and pain just so that strangers like you and me can have the freedom to do even the little things. Even though they go through all of this suffering the public may never know what they have done because the government keeps it under wraps. They are the Navy Seals. The Navy Seals are a special operation force that have been evolving their elite training to protect America since the 1960’s. This force has been involved in curtial war events such as, search and destroy missions in Vietnam war, Lightning assaults in grenada and panama, and rooting out terrorist such as the killing of Osama Bin Laden.
Cheating on the Beachmaster by Rebecca Kessler has explained an intriguing behavior of female Southern elephant seals. The entire species of elephant seals are well known for their polygynous mating behavior, in which one male elephant seal dominates several females until another stronger male elephant seal dethrones him. This process involves violent fightings among the males and many other brutish behaviors. According to Burney J. Le Boeuf, a marine biologist studies elephant seals for years at the University of California, male elephant seals have the “habit of biting the neck when copulating”. Meanwhile, female elephant seals and their pups are expected to very vulnerable and independent because of their relatively smaller sizes compared to those of the males.