Answer:
A
Explanation:
The dead matter from organisms such as plants and animals that die need to be recycled so the nutrients in the matter are released and used up by other organisms. This is how sustainability is achieved in ecosystems through a cyclical nature of nutrients flow. Decomposition of the dead matter is done by decomposers such as fungi and bacteria. Without them, the dead matter would accumulate while the soil would lack nutrients for plants to grow and for other bacteria to utilize for energy. This would affect the rest of the food chain/web causing the ecosystem to collapse.
Theory ----> not proved yet
Law --------> a theory which is proved and universally accepted
Answer:
the most random changes of mutation is mainly an organisms physical appearance
Answer:TRUE
Explanation: Increased muscular Strength develops from increased Physical and aerobic exercise and activities,it has been established that physical activities like running, swimming,jogging, skating etc all have impact in Building one musculoskeletal Strength and it also helps to improve aerobic respiration which in turn will help to burn all excess FATS and CHOLESTEROL levels which has been attributed to major chronic health conditions,CANCER,HIGH BLOOD PRESSURE, HYPERTENSION etc.
