The right choice of them is biosphere, community, and organism.
Answer:
A
Explanation:
A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are simultaneously attracted by the two atomic nuclei. A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions.
Answer:
Essay on types of digestion
Explanation:
Digestion refers to the breakdown of large food molecules into small food molecules so that can be absorbed by the blood. There are two types of digestion i. e. mechanical digestion and chemical digestion. in mechanical digestion, the food is broken down into smaller parts physically with the help of teeth while on the other hand, in chemical digestion, food is broken down into small particles with the help of chemicals such as acids and enzymes. This chemical digestion is carried out in the stomach where different types of chemicals are present.
Scientists are concerns about the loss of species because the loss of one species can set off a chain reaction that cause other species to die out and affect out food chain.
Answer:
Choice C., High blood glucose levels can result from an overproduction of insulin
Explanation:
Blood sugar levels are regulated by two pancreatic hormones—insulin and glucagon. When blood sugar levels increase, insulin is released (beta cells of the pancreas), it binds to its receptors and consequently increase glucose uptake by cells, which effectively lowers blood glucose levels. On the other hand, when blood sugar levels decrease, glucagon is released (alpha cells of the pancreas), it binds to its cell receptors, and causes glucose to be released into circulation, thereby increasing blood glucose levels.
