Answer: A stream carves its path through a watershed, eroding nutrients from the soil and rock, or taking them from plants.
Explanation: Because, those nutrients flow through different branches of the food web. They may stay in that watershed for a long time or they may leave.
The two parts of a solution are a Solute and the other one is a Solvent. The Solute is the substance that dissolves, and the Solvent is the majority of the solution.
Answer:
B. Ca
Explanation:
Let's look at the electron configurations of all four elements (I am going to write it in noble gas configuration to make it simpler):
Mg electron configuration: [Ne]3s2
Ca electron configuration: [Ar]4s2
Ar electron configuration: [Ar]
K electron configuration: [Ar] 4s1
We notice that Ca has two electrons in the 4s sublevel, which satisfies what the question is asking for.
The answer is thus B. Ca.
It's a table that has elements private message me I send u a pic of it ...
<span>I think that it is S^2-</span>