Carbon and hydrogen.
The simplest group of organic molecules are the alkanes which have only these 2 elements. Eg methane, CH4.
Answer:
Intestinal blood flow is critical for digestion, as well as being a key element of overall ... The O2 consumption of the small intestine is more rigorously controlled than is the ... Much less commonly, water and solutes move slowly by pinocytosis.
Explanation:
<h2>Answer with Explanation </h2>
If threads are layered from top to bottom brown green red. Green layer will come into focus first if you are using the microscope properly. Green colour has wavelength of 500-565 nm and frequency of 530-606 THz approximately. Due its properties it will come into focus first if you are using the microscope. If anything is covered by brown, red and green, it will appear only green color first by microscope due to its specific characteristics. The visibility of colors depend on the properties which it has.
If it were single celled, then it would need some form of protection so the answer would be C. an outer covering
Aerobic Respiration vs. Anaerobic Respiration. ... Aerobic respiration takes place in the presence of oxygen, produces a large amount of energy. Carbon dioxide and water are produced as the waste products. Anaerobic respiration takes place without the use of oxygen, produces small amounts of energy.
