Answer: By Hormonal action and Nervous coordination
Explanation:
Hormones are substances produced by one tissue and conveyed by the bloodstream to another to effect physiological activity. Homeostasis is the maintenance of a stable internal environment in the body.
Body systems such as digestive, circulatory, excretory systems etc, all are coordinated to achieve a STABLE INTERNAL ENVIRONMENT by the aid of HORMONES AND/OR NERVOUS COORDINATION.
For Example: the vasodilation of blood vessels during hot weather, and the opposite action of vasoconstriction during cold weather are both controlled by Hormonal action and nervous coordination which leads to a stable body temperature preventing excess heat accumulation.
Also, Nervous system controls the body systems, such that the muscle contractions are joined to actions like sweating, breathing, respiration etc
So, to maintain homeostasis hormonal action and Nervous coordination is necessary.
The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.
Answer:
monomer of carbohydrates glucose,sucrose,fructose
polymer of carbohydrates starch,cellulose,glycogen
monomer of protein amino acids
polymer of protein polypeptides
monomer of nucleic acid nucleotides
polymer of nucleic acid DNA
polymer of lipids triglycerides
monomer of lipids 3 fatty acids and glycerol
Pigments absorb light used in photosynthesis.Set of wavelengths that a pigment doesn't absorb are reflected.
Answer:
Nuclear energy because it can never be reused again
