C is the correct answer. The main function of the digestive system is to break down food into nutrients.
Food is needed to fuel the body for energy, and also for growth and repair. The digestive system converts the food we eat into their simplest forms , like glucose, amino acids and fatty acids. The broken down food is then absorbed into the bloodstream from the small intestine and the nutrients are carried to each cell of the body.
The large intestine serves as a storage organ for the excretory products. However though this is true, the main function of the digestive system is to break down food into nutrients. The excretory duty is more of a necessity rather than a primary function.<span /><span /><span /><span />
<span>The situation is one similar to the development of antibiotic resistance. The initial five years of spraying wiped out most of the pests; however, the killing also helped the pesticide-resistant pests to survive and thrive since they had less competition. Over the period of five years, the pesticide resistance became more and more common among the beetles and in the eighth year, almost all of the beetles were resistant to the pesticide. Thus, the answer is D.</span>
By studying the population over an extended period of time, scientists can discover the change in number of population and its growth.
Florida panther population is listed as endangered, but it is estimated that the number is recovering. The population had grown from about 25 adults in 1995 to roughly 100 in 2010. The updated estimates from the 2017. calculated the number between 120 – 230 panthers which is still not a sustainable population size.
Answer: the tundra is important to protect is that it serves as a habitat for migratory populations, like waterfowl, shorebirds, caribou and several bear species. It is home to endangered animals such as the Arctic Fox, Polar Bear, Grizzly Bear, Caribou, and Musk Ox.
Explanation:
