One of the most common methods to date volcanic rocks uses potassium radioactive parent and argon stable daughter).
Answer:
um.. have you thought about google and what dont you get
Explanation:
The correct answer is letter A
On the morning of January 24, 1848, carpenter James Wilson Marshall and his staff worked on the construction of a sawmill at John Sutter's ranch in the Sierra Nevada region of central California. Marshall had to bypass a stream to install the saw, moved by the force of the water. When he looked at the muddy bed of the Americans' river, something caught his eye: there was something shining there in the sunlight. It was gold.
The gold that flowed in California was generous. In the first months after the discovery, it was possible to collect the nuggets directly from the soil. Just crouch and pick it up. The precious metal was found in riverbeds and in ravines that flow. Mexican Antonio Franco Coronel, for example, left the job of teaching in Los Angeles and in three days of mining collected 4.2 kg of gold.
Answer:
Achievement
Explanation:
According to psychology, our behavior is motivated by different things and we all have different motivations for our behaviors. Therefore, two individuals can have the same behavior but be motivated by different factors.
One of the needs is the need for achievement and it refers to the desire to achieve a significant accomplishment and showing high-standards in a task by mastering the skills needed to do this task. In other words, it's the need to accomplish a task that is perceived as difficult.
In this example, Rodrigo enjoys being able to complete a difficult job successfully and accomplishing tasks which require skill and effort. We can see that he feels the need to accomplish a task that are perceived by himself (or others) as difficult by mastering skills. Therefore, we can see that he is motivated by Achievement needs.
A conductor of the underground railroad is called a Quaker
