Answer:
A control group is a set standard so that comparisons can be made to see what your experiment did. The experimental group is the group that has been changed. A control group also allows you to determine your variables.
Explanation:
It’s mechanical because it’s fs not weathering
Answer:
Option D
Explanation:
Complete question
which of the following properties of water are essential for life on Earth?
A) polarity
B) Cohesion & Adhesion
C) High heat capacity
D) All the above
Solution
Some essential properties of water are as follows –
a) Polarity
b) Solvent
c) High heat capacity - it is essential to maintain the temperature on earth. The water bodies are comparatively cooler than the temperature of earth
d) High heat of vaporization
e) Cohesion – It is essential for surface tension & capillary action
f) Adhesion – It is essential for surface tension & capillary action
g) Lower freezing density – Due to this reason, ice is lighter than water
Hence, option D is correct
Answer:
C) esophagus - moves air from the nose into the lungs
Explanation:
The oesophagus is a muscular tube with a sphincter valve at each end. Its main function is to transport food and fluid, after being swallowed, from the mouth to the stomach.This is propelled from the pharynx into the oesophagus, and towards the stomach in a peristaltic waves. The peristalsis also pushes food along the alimentary canal
Answer:
New vegetation and animals came to this place when the environment is suitable.
Explanation:
The ash and rock strewn surface began to undergo primary succession after few month when the soil is cool down because the soil has nutritive medium that helps the vegetation to grow on that land. In the primary succession, the new vegetation grows which is well suited to that environmental condition and uses the nutrients present in that soil for its growth and development. Many new organisms also came to this new landscape when the environment is suitable.
