Fossils are just skeletons that are found in the ground, left from generations ago. Such as Dinosaur Skeletons.
Answer:
I'm liking D for the third one but you might be correct.
Explanation:
this blood type is A as it contains antigen A which reacts with anti A
Answer:
Frog - The frog has three respiratory surfaces on its body that it uses to exchange gas with the surroundings: the skin, in the lungs and on the lining of the mouth. ... A frog may also breathe much like a human, by taking air in through their nostrils and down into their lungs.
Tadpole - Tadpoles open their mouths as they swim and take in water. As the mouth closes, muscles transfer the water to the gills. These consist of thin membranes called lamellae, which take oxygen from the water where it enters the blood stream through the process of diffusion.
Answer: It happens when we are excited and happy and angry
Explanation:
