Answer:
True
Explanation:
Finding tropical fossils in now-cold places is evidence for climate change. This indicates that the site at which the fossils were found once had a tropical climate.
The answer is large leaves.
These enable the plant to absorb more of the scarce sunlight it receives, so it can create enough nutrients for it to survive.
Answer:
C.
Fe goes from 0 to 2+, oxidation. It is reducing agent
N goes from 5+ to 2+, reduction. It is oxidizing agent
Explanation:
Oxidation number
Fe (s) has 0
FeSO4 has 2+
HNO3 N has 5+
NO N has 2+
Answer:
Explanation:
2Ca is the elemental form of calcium. There are 2 mols of calcium in whatever equation you are talking about.
Ca_2 means that there are 2 ions of Calcium making up something like
Ca3(PO4)2 means that you have the compound Ca3(PO4)2 with 2 mols of PO4 and 3 moles of Ca
It is hard to come up with something composed of Ca2 because unless the other ion is odd, the 2 will divide into something.