Answer:
Green plants are called producers because they manufacture their own food with the aid of photosynthesis.
The clivage furrow forms, the chromosomes are on either side of the cell
Sunlight is the original source of almost all energy in most ecosystem.
Absorption of heat by breaking down hydrogen bonds
Answer:
Mechanical barriers — which include the skin , mucous membranes , and fluids such as tears and urine — physically block pathogens from entering the body. Chemical barriers — such as enzymes in sweat , saliva , and semen — kill pathogens on body surfaces.
