Because it was a close water source where they could grow food instead of chase there food
If Essica listens to jack's explanation and understands what he means. The process jessica demonstrated is: decoding.
<h3>What is decoding?</h3>
Decoding can be defined as the ability of a person understand a message or information after analyzing and interpreting the information after encoding .
Jessica demonstrated decoding because Jessica was able to analyze, interpret and understand what jack was saying after listening to jack.
Therefore If Essica listens to jack's explanation and understands what he means. The process jessica demonstrated is: decoding..
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What one thinks about another visualizes .
Answer: Janet walker is a author. janet walker is concerned about Hong Kong’s pink dolohines because they are possibly about to disappear.
Explanation:
Answer:
The rock is 3.75 billion years ago.
Explanation:
Given that:
Half life = 1.25 billion years
1 billion years = 10⁹ years
So,
Half life = 1.25 × 10⁹ years

Where, k is rate constant
So,


The rate constant, k = 5.5452 × 10⁻¹⁰ years⁻¹
Initial amount [A₀] = 80 micrograms
Final amount
= 10 micrograms
Using integrated rate law for first order kinetics as:
![[A_t]=[A_0]e^{-kt}](https://tex.z-dn.net/?f=%5BA_t%5D%3D%5BA_0%5De%5E%7B-kt%7D)
So,





So,
<u>The rock is 3.75 billion years ago.</u>