Answer:
The answer "to obtain an average that accurately represents fish from this area
" should be the answer because a large sample size is crucial for being a good representation of the whole population, and by taking many samples from each fish scientists can then determine the average mercury concentration within each fish, which then allow them to give a good estimate of the mercury concentration in the fish population because of their sufficient sample size.
Explanation:
Answer:
In plants, the cell wall is full of small holes called plasmodesmata. If there were no cellular membrane all of the fluid in the cell (cytoplasm) would just leak out. The membrane also acts as a barrier to the outside world, controlling the influx of nutrients, hormones, chemicals and other substances the cell uses.
In animals, if there is no cell wall so the absence of a cellular membrane would make all animals a pile of goop on the ground.
Explanation: in other words its important because it protects it from harmful things
Answer:
Explanation:
In open systems, hemolymph is not contained in vessels and instead surrounds tissues and organs. In an earthworm's circulatory system, blood is contained within vessels (dorsal, ventral, and lateral), which categorizes it as a closed system.
Answer:
I think it is probably A. If it not a. then d.
