Answer: Live R strain + Heat-killed S strain
Answer:
Option A, Acquisition
Explanation:
The first stage of learning is known as acquisition. It causes establishment of responses by pairing of Neutral stimulus, conditioning and un-conditioning stimulus. Once the association between a neutral stimulus and conditioned stimulus is established, the responses are acquired.
For example – If a bird is trained to pick a key whenever there is a sound of a bell, then after certain period of time an association will be established between the “ringing of bell” and “picking up of key” activity. Therefore, whenever the bird will hear the ringing sound it will search for key to be picked.
Thus, option A is correct.
It helps improve spike stability by alternating between crops with deep roots and those with shallow roots. Pests are also put off because their food source keeps changing.
Answer:
2.
Explanation:
only 2 of them are the causes of air pollution
Answer:
• Increase temperature
• Increase concentration-Increase concentration of the Silver nitrate or of the copper.
• Increase surface area-Grind the copper into powder of break it up into smaller pieces.
