To determine the reason for the fish death, do the following:
1. Test the water for the presence of organic substances that may be poisonous to the fish.
2. Test the dissolved oxygen concentration of the lake at different locations and at different depths.
3. Perform full toxicological examination of the lake to determine if any pollutant or poisonous chemical is present in the lake.<span />
Answer:A.Environmental issues are not always localized.
Explanation:Did on edge
I attached the right answers, maybe some words were difficult to understand:
Vagina in the sex of the female
The urethra is a duct which is shared between the urinary system and the testis. It is located into the penis (it passes both sperms and urine)
Testis means the testicles, where spermatozoids are produced.
Fallopian tube, join between the ovary and the uterus of the female, it looks like an elephant trunk
<span>Vas deferens: are the ducts between the testis and the prostate, it transports the spermatozoid and will be mixed with the prostatic secretion (sperm).</span>
Answer:
3.) because the long dna will not fit inside the cell.
Explanation:
This question is oddly written. At first glance, I can tell it's not 1 or 2 because DNA doesn't "dissolve" in cell "water", nor will it "down" (I'm assuming this means "drown"?).
The main reasons for DNA packaging are so that the DNA can fit into the cell, and so it's protected from damage. The DNA is vital to the cell, so it protects it by coiling it up. Coiling and packaging are also important when it comes to gene expression.
Muscular: The muscular system helps the frog to move. This system can help them escape from predators and catch prey.
<span>Skeletal: The skeletal system provides support for the frogs body. This system goes along with the muscular system
the skeletal part is support for the muscular parts</span>