Answer:
2
Explanation:
Oxygen has 6 in the outer shell. So in order to complete its octet it only needs two electrons. Like in the Water molecule, oxygen forms covalent bond with two hydrogen atoms.
Answer:
C. Fossils of the winged dinosaur Archaeopteryx show that it had modified scales that produced feathers.
Answer:
Carbohydrates.
Explanation:
Carbohydrates are very essential food nutrients that meet out our entire cellular energy requirement. They play a special role of providing energy during exercise and are commonly found is grains (wheat, rice) , fruits, vegetable, milk products and beans. They make human being sharper and provide energy for all their metabolic process with in the body.
Carbohydrates are broken down into simple sugar molecules such as glucose, fructose, and galactose.
