Answer:
All plants, algae, and cyanobacteria which photosynthesize contain chlorophyll "a". A second kind of chlorophyll is chlorophyll "b", which occurs only in "green algae" and in the plants.
The right option is; D.Trawling
Trawling is the method of commercial fishing that tends to produce excessive bycatch.
Trawling is a method of fishing in which a trawl (fishing net) is dragged through the water at a specific depth behind one or more trawlers. Trawling is usually used for commercial fishing, and it tends to produce excessive bycatch; a condition in which non target marine organisms such as seabirds are incidentally caught, while catching target species such as crabs and fish.
The answer is <span>B) three chromosomes in any one set.
In a human diploid somatic cell (2n), there are 22 chromosomes present in two copies and 1 pair of sex chromosomes. This means there are 23 pairs of chromosomes (so choice C. does not indicate a genetic problem). There are in total 46 chromosomes (23 pairs in 2 copies), that differs in lengths (so choice D. does not indicate a genetic problem). Speaking of a pair of sex chromosomes, there could be two X chromosomes in females or one X and one Y chromosome in males (so choice A. </span><span>does not indicate a genetic problem).
But, having three chromosomes in </span>any one set suggests a presence of trisomy, which is <span> a condition in which an extra copy
of some chromosome is present. This results in a genetic disorder.</span>
Crab in Rocky shore By rock pools - deep in ocean as they get older
Typical day - just shuffle along the rocks
To get food - from rock pools use claws to get fish
As they get bigger, they eat protozoa, diatoms and smaller crabs that live on the ocean floor. When the crabs reach 2 to 4 years of age, they move to deeper water where they join the adult crabs that eat worms, clams, mussels, snails and sea urchins. They also eat sand dollars, barnacles, fish parts and algae.
Hard shell is their protection and claws as a defends mechanism
PredAtors - possibly birds while on shore but bigger fish on ocean floor
If you are a Carnivore, then you find nutrients from prey,(Deer, pig, etc.) but if you are a herbivore, then you find nutrients from plants. However, if you are a omnivore, (we are!) then you get nutrients from both plants and animals. I hope I was helpful!
