Less nutritious food, dramatic change in temperatures around the world, the rising of sea levels and extreme weather events
National park's are meant to be a safe place for animals and nature where they can't be harmed or pursued for human use. The second question depends on your point of view but the natural environment does need to be protected.
Freedom of speech is a principle that supports the freedom of an individual or a community to articulate their opinions and ideas without fear of retaliation, censorship, or legal sanction. The term "freedom of expression" is sometimes used synonymously but includes any act of seeking, receiving, and imparting information or ideas, regardless of the medium used.
Many scientists think the sun and the rest of the solar system formed from a giant, rotating cloud of gas and dust known as the solar nebula. As the nebula collapsed because of its gravity, it spun faster and flattened into a disk. Most of the material was pulled toward the center to form the sun.