Answer:
weed means which feed on plants and takes nutrients from them weed also stops the growth of plant
so we have to uproot weed
Answer;
-Chitin is a structural carbohydrate that forms their exoskeleton
Explanation;
-Chitin is the main component in the exoskeletons of arthropods and crustaceans and is also in the cell walls of fungi.
-It is a linear long chain polymer consisting of repeated units of N-acetyl-glucosamine.
-The main function of the chitin-containing exoskeleton is to keep the inner soft tissue safe from any sort of injury and also prevents the delicate tissues from drying (acts as a water tight barrier against dehydration).
Explanation:
respiration because it's about blood circulation
C
Hot springs are heated by the geothermal heat- heat from the Earths interior.
Ice is less densw than water (a)
The substances which are less dense than water float on water
