There are 4 valence electrons
Answer:
Uvula.
Explanation:
Respiration may be defined as the process of exchange of gases between the body tissue, lungs and the environment. Oxygen is inhaled and carbon dioxide is exhaled out during the process of respiration.
The choanae, external nares, epiglottis and mouth plays an important role in respiration. Uvula is mainly involved in the production of the salivary gland. The uvula moistens the area and also involved in the speech process. Hence, uvula do not play important role in respiration.
Thus, the correct answer is option (b).
Answer At heart, all life on Earth uses a membrane that separates the organism from its environment.
Progesterone and luteinizing hormones act together to stimulate ovulation. Progesterone is a very important hormone in pregnancy and it is very important in thickening the uterus' lining in every month for every female. Luteinizing hormone is important in regulating the menstrual cycle and the production of egg cells.
Answer:Milk production and consumption now cause much more pollution
Explanation:Globally, milk production and consumption requires extensive dairy farming. This leads to emission of methane which is a greenhouse gas and contributes to global warming and climate change; air and water pollution.
