Answer: First Third Fourth Choice
Explanation: Becuz when water freezes, the density becomes lower and the bonds stabilize, resulting in the molecules moving apart.
Answer: The river source, river mouth, downstream, upstream, flood plain, main-river, meander, tributary, watershed boundary, and wetlands.
Explanation:
Answer: smiley face: 60° N and 60° W
star: 60° S and 30° E
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Answer:
d. The species diversity of plot 2 is greater than that of plot 1.
Explanation:
Species diversity of an area depends on its species richness and species evenness. Species richness is the number of species present in that area. Species evenness measures how evenly these species are distributed.
Here, both plot 1 and plot 2 have same number of species. They both have four species of trees ( maple, birch, oak and pine) hence their species richness is same. However plot 1 has 85% maple trees and the rest three species make the remaining 15%. Plot 2 has more even distribution as 35% of trees are maple trees and birch and oak also have similar frequency with 25% and 35% respectively. Hence, plot 2 has more evenness.
Species diversity depends on both richness and evenness. Since plot 1 and 2 have same richness but plot 2 has more evenness, plot 2 has more species diversity than plot 1.
Answer:
Covalent bonds are formed in the nitrogen gas.
Explanation:
"<em>Nitrogen atoms will </em><em>form three covalent bonds</em><em> (also called triple covalent) between two atoms of nitrogen because each nitrogen atom needs three electrons to fill its outermost shell</em> (Lumen Learning)."
I hope this helps! Have a great day!
