1. Biological control is the intentional manipulation of natural enemies by humans for the purpose of controlling pests.
2. Mechanical control includes mowing, hoeing, cultivation, and hand pulling.
3. Chemical control is the use of herbicides.
It’s a study of unusual behaviors,emotion,and thought hope this helped
Edwin Hubble used the Doppler effect to determine that the universe is expanding. After years of scientific research and observation of different celestial bodies through a telescope, Hubble found that the light from distant galaxies was shifted towards the red end of the spectrum. This red shift indicates that stars are moving away from us and from each other. This phenomenon is called the 'expansion of the universe', also known as the big band theory.
Answer:
Alveoli
Explanation:
The smallest branches are called bronchioles and at the end of these are your air sacs (alveoli).
