erode means to wear away slowly
Middle class P.................
Answer:
D
Explanation:
If NASA had constructed a Space Shuttle without knowing if it would be safe for its passengers, there could be many casualties. So they would test it beforehand using a model, to make sure that it will be safe and sturdy for when they build it.
Answer:
Negetive - Lots of bugs and possibly poisonous plants you aren't aware of.
Positive - Lots to discover!
