Its pretty easy, correct answer is D
Answer:
she can use crystalization method.
Explanation:
She should boil that liquid on flame and then cool it down on mederate temprature and check it out rather the crystals formed or not . if crystals are formed then there will be salts.
And if she want topredict the certain salt then she has to perform certain reactions.
Answer:
Teaching
Explanation:
Teaching or tutoring is a type of human job that gives strength to other individuals by impacting them with the necessary knowledge or skills they required to survive in life.
Teachers or tutors are the people that carry out this task.
It should be understood that the most important thing that people need to survive in life is information. And when they are given the information they will do exploit.
<u>Answer:</u>
Earth's axis and position around the sun.
<u>Explanation:</u>
Earth's tilted axis causes the seasons to change. Throughout the year, different parts of Earth acquire the Sun's most direct rays(Or heat) because of the orbital rotation of Earth. So, when the North Pole tilts toward the Sun, it's summer inside the Northern Hemisphere. And whilst the South Pole tilts towards the Sun, it is winter within the Northern Hemisphere and vise versa.