Answer:
In direct observation, EVERY INDIVIDUAL in a population is counted. In indirect observation, SIGNS OF AN INDIVIDUAL, such as tracks or nests, are counted.
Explanation:
Direct observation is to involve looking at the actual behavior or occurrence so for your question it would be every individual.
Indirect observation is a result of that occurrence, so for your question it would be the signs of an individual.
Answer:
How Is Sound Produced?
Sound is a very important part of our life.
Sound helps us to communicate with another person.
Let's discuss some sounds in our daily life.
SOUND IS PRODUCED BY VIBRATIONS
The cover of the drum vibrates.
So, sound is produced when an object vibrates.
Sound is a form of energy which is produced as a result of the vibrations of an object.
Explanation:
Answer:
In Beryllium there are two energy levels
Explanation:
Answer:
decreases
Explanation:
the more conc of H ions increases the more it becomes acidic so the pH goes down
Answer:
The atomic number that should be here, 57, is located at the bottom of the table in the row called the Lanthanides. Directly below the space in Row 6, in Row 7, is another empty space, which is filled by a row called the Actinides, also seen at the bottom of the chart.
Explanation:
hope this helps!
