Ascientist is evaluating a proposal for raising large numbers of fish in ocean pens for human consumption. as part of the evaluation, the scientist is designing a plan for investigating how the fish in the ocean pens might affect nearby ecosystems. which of the following is the most appropriate factor to use as the dependent variable in the experimental investigation?

The correct answer is:  The amount of metabolic wastes in the water where the fish are being raised

Explanation:

It is very important in aquaculture that the amount of metabolic wastes be controlled, specially the solid ones, due to the fact that once that they decomposed in the water they can increase the amount of nitrogenous compounds and some other molecules. Therefore, this process could really affect as well the amount of oxygen in the water, stressing animals and plants and even leading them to death.  

the answer is "meiosis ii in the mother".

the procedure of meiosis includes two divisions of the hereditary material. the main division is known as the decrease division – or meiosis i – on the grounds that it lessens the quantity of chromosomes from 46 chromosomes or 2n to 23 chromosomes or (n depicts a solitary chromosome set). in people, the decrease division results in two sperm cells each with 23 chromosomes or an egg cell with 23 chromosomes and one disposed of polar body. the second division – or meiosis ii – is called equational division. the two sperm cells split again creating four sperm cells, each with 23 or n chromosomes. in oogenesis, the egg cell and polar body partition to shape the ovum and two extra polar bodies. along these lines, the posterity are guaranteed to get one portion of the chromosomes from the mother and one half from the dad.