A. "Chloroplast" is the main organelle for photosynthesis.
When a girl asks for your number, say for example you are a boy, then this could mean two things: the girl needs something from you may it be school work or business endeavors or the girl may have want to personally get in touch with you. Girls are not the aggressive type when it comes to relationship so this could mean she likes you,
Answer:
Formal Operational Stage
Explanation:
According to Piaget's theory of cognitive development, the ability to think about things that are not concrete, make predictions, and use logic to come up with hypotheses about the future is attained during the <em>Formal Operational Stage.</em> This stage starts at age 11 and goes through adulthood. Kids develop the ability to think about abstract ideas, make predictions, and think logically.
Answer:
D. By adding the vectors

Explanation:
Given
Represent the velocity of the river current as VR

Represent the velocity of the boat as VB

Required
How to calculate the velocity of boat relative to river current
From the question, we understand that both move in the same direction.
So, the relative velocity V is calculated as:



Notice that the both velocities are added together to get the relative velocities.
This is so because they both move in the same direction
<em>From the list of given options, only option D is correct.</em>