The puppies heads are often to big to fit through their mothers birth canal. They may get birth defects like flat chests, if their face are wrinkly they get acne and eye problems, and they are prone to skeletal disorders like hip dysplasia.
The answer is the first one The Earth rotates on its axis over 24hrs.
Carbon dioxide and water are the products of cellular respiration and the reactants of photosynthesis.
Sugars such as glucose, fructose, and ribose are all examples of monosaccharides, or simple carbohydrates. Simple carbohydrates can bond together to make polysaccharides, or larger, more complex carbohydrates, such as starch or cellulose.
