Bacteria and the human both get benefit from each other and this relation is mutualism. Bacteria stay inside nose, mouth, intestines, and many more areas of the body surface. They help human by giving response to pathogenic bacteria for protection of immune system.
They metabolize nutrients, vitamin production and wastes process in human’s digestive system. On the other hand, human provides them place to live. These above best demonstrates mutualism between bateria and humans.
I cannot find the propositions if it is a MCQ, so I will tell what a bacterial mutualism is:
Mutualism is an exchange between species (two or more) in which the mixed organisms profit from this exchange. Unlike commensalism, the associated species adapt, because the modification of one can affect the survival and reproduction of the affiliated species.
Many mutualistic bacteria live and develop in us, for example, the intestinal flora synthesizes vitamin K, a vitamin that is necessary for the absorption of our food. This same intestinal flora also hinders the proliferation of pathogenic bacteria as well as that of commensal bacteria potentially dangerous.
Answer:
D Because it is wrong
Explanation:
Ans. (D). lipids weigh less and store more energy (gram for gram) than carbohydrates.
Lipids represent a class of biomolecules, made up of long hydrocarbon chains. Lipids, such as triglycerides act as major energy storage sources in plants and animals.
Lipids weigh less and contain more carbon atoms per gram as compared to carbohydrates as in carbohydrates, more oxygen is present. Due to this, lipids provide about 9 kcal (kilocalories) per gram, while carbohydrates provide about 4 kcal per gram.
Hence, it is advantageous for migratory animals to store energy in the form of lipids instead of carbohydrates.
Thus, the correct answer is option (D).
B. militarism of African nations
C. fighting between India and Pakistan
D. an unprovoked attack on the U.S.
Answer:
Option A, nationalism in the Balkans
Explanation:
Eastern Europe cluster of nations lying between the Austro-Hungarian and Ottoman empires was known as Balkans. Due to its strategic location, all the Europeans powers focused on Balkans’ event. Also, the Balkans were politically active as they had both national ethnicity and tension with in its national territories.
In 1912, several Balkan nations became part of military alliances as influenced by the Russians which later on led to the formation of the Balkan League. This Balkan league waged several wars against the Ottomans in order to remove them from eastern Europe. After fighting for eight months, Balkan won this battle but they were disrupted and thus Serbian nationalist groups and led to World War I
Hence, option A is correct
Answer:
C) it is always the same as it was before the collision
Explanation:
Kinetic energy is the answer