Answer:
One gram of protein has 4Kcal of calories. Proteins should represent between 10 and 15% of daily energy intake. An adult needs daily 0.8 grams of protein per kilogram of body weight. Children, pregnant women, nursing mothers, athletes, and older adults need a little more protein.
Explanation:
The answer is...
<u>Closed</u> ecosystems do not experience any new input or output of energy and/or material.
I hope this helps! :)
Overfishing is catching too many fish at once, so the breeding population becomes too depleted to recover. Overfishing often goes hand in hand with wasteful types of commercial fishing that haul in massive amounts of unwanted fish or other animals, which are then discarded. Overfishing endangers ocean ecosystems. Secondly, unregulated fishing practices that result in grave harm include by-catch (as explained in the previous point) and Trawling. Trawling involves scraping along the bottom of the sea to gather fish. This practice is one of the major causes of destruction to marine habitats. Third, overfishing has led to a decrease in the population of productive fish, resulting in lesser stocking of the fish. Forth, bycatch leads to the capturing of marine animals that are not used or required. The animals may include protected or endangered species or species that are of little or no economic value. If caught, they are normally destroyed and discarded either in the water or ashore. Lastly, fish farming requires feed for reared fish. For example, you will need between four and eleven pounds of prey fish to raise just one pound of farmed salmon. With the rapid expansion of the aquaculture industry, prey fish population is reducing at alarming and untenable rates. According to some researchers, if this trend continues, fish farming will have outstripped the supply of fishmeal by 2020.
Answer:
Mutant receptors bind to the ligands, thereby interfering with the RTK-mediated signaling pathway
Explanation:
In consequence, the data generated by this type of experiments help researchers to understand the function of the genes (in this case, genes that encode for RTK receptors). This approach is known as 'reverse genetics' and is widely used in molecular biology.
Answer: All of the listed responses are correct.
___________________________________
>increases the oceanic concentration of carbonic acid
>reduces the carbonate ion concentration in the oceans and threatens calcifying organisms in marine ecosystems
>increases the oceans' acidity and lowers pH
>increases the hydrogen ion concentration in the oceans but decreases the carbonate ion concentration and threatens the livability of the oceans for calcifying organisms
Explanation: