ionic bonds : These are bonds formed from the donation and acceptance of electrons between elements, giving rise to strong compound
Covalent bonds: bonds formed when electrons are shared between elements giving rise to compounds
metallic bonds; are bonds found only in metals.
Producers are organisms (usually plants) that utilize photosynthesis to produce their own food supply.
Photosynthesis is a process that uses photons from the sunlight to turn glucose and oxygen into carbon dioxide and energy. It basically is a process that uses light energy to make a usable food source, and it takes place in the cells of a chloroplast.
Chlorophyll is a green pigment found inside of plants' chloroplasts that absorbs light photons, allowing photosynthesis to take place.
Answers are:
a) upper motor neuron b) lower motor neurons