Answer:
<em>Embryo</em><em> </em><em>retention</em><em>,</em><em> </em><em>a</em><em> </em><em>cutic</em><em>le</em><em>,</em><em> </em><em>stomat</em><em>a</em><em>,</em><em> </em><em>and</em><em> </em><em>vascu</em><em>lar</em><em> </em><em>tissu</em><em>es</em><em>.</em>
The name of the species that eliminated the wolves in Yellowstone so that they had to be reintroduced is <u>humans</u>.
In the olden times, people were unaware about the importance of natural ecosystems and the worth of each organism being part of an ecosystem. An expansion in an area caused the wild predators to come close to domestic livestock during the 1800's. The wolves began using these domestic animals as a source of nutrition. The humans, in order to protect their livestock, killed wolves.
It was as late as the 1970's when efforts started to being made to protect endangered species. These efforts caused the reintroduction of the wolves in Yellowstone.
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Answer: A. ancestral trait
Explanation:
Bipedalism can be define as a form of terrestrial locomotion, in which the organism moves with the help of two rear limbs or legs. Typical bipedal movements includes the hoping, running and walking. The evolution of the human bipedalism occurred in primates in about 4 million years ago with Sahelanthropus (oldest human ancestors or African Apes). The human ancestor Sahelanthropus led to the morphological alterations in the human skeleton including changes in the bones such as size of the bones of the foot, knee size, shape and orientation of the vertebral column, and leg length. All these changes contributed to the bipedalism.
Answer:
23
Explanation:
After mitosis two identical cells are created with the same original number of chromosomes; 46. Haploid cells that are generated through meiosis, such as egg and sperm, only have 23 chromosomes, because, remember, meiosis is a "reduction division."
Peripheral proteins are held to the membrane surface primarily through electrostatic or hydrogen bonds.