Label an energy pyramid and place 20 kcal on Trophic level 4. i dont know the numbers to put on pyramid i wasnt at school that week

He should put sand around the spill in order to contain it so that it won't spread

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.