Answer:
The law of conservation of mass states no matter is created or destroyed. This means that the matter currently on Earth is the only matter that will ever be available to us. However, it also means that this matter will not be destroyed. So, water, oxygen, carbon, and nitrogen are all used by living things in our world and then recycled to be used again.
One example of this is the water cycle. More water is never added or taken from the world, it is just reused. First, water starts in some body of water and then evaporates into the air. Then, the water falls back to Earth as precipitation.
A) 12 is the answer because sex cells have half as many chromosomes as the offspring will have, half from the mother, the other half from the father.
Since this was a simple abrasion (it would really be the same for anything), this was thanks to the human body's cells multiplying. His damaged skin cells are being replaced with brand new ones, any red blood cells he lost already being replenished.
Answer:
hope it helps....
Explanation:
Compost your waste; grow some of your own food and recycle. Conserve water. It takes lots of energy to pump, treat and heat water so saving water reduces greenhouse gas emissions. Watch what you pour down the drain and use eco-friendly products that break down.The most effective way to limit ocean acidification is to act on climate change, implementing solutions to dramatically reduce the use of fossil fuels. If we dramatically cut our global warming emissions, and we limit future warming, we can significantly reduce the harm to marine ecosystems.
