an animal living near / in a stream mostly needs food to eat
No such thing means no such need.
They all do ... but you may be thinking of plants - they don't need animals to survive but animals need plants.
because the animals need to drink to and he can't scare them away
most animals need food, water, and oxygen
Animals need appropriate nutrients , water , oxygen to breathe and proper living conditions.
YES
even plants and most of the living organisms need oxygen
People living near a dormant volcano need to know that it can become active at any time. They are unaware or sometimes don't believe it may strike, and can get hurt.
Because every living thing needs oxygen
Everything living needs energy. Plants and animals need energy to carry out the daily activities of living. It takes energy to get more energy. Every bodily function requires energy.
Living organisms that produce oxygen and food that animals need are called producers. For example, plants are producers because they make their own food.
I need to know that too! If you find out please let me know!