Answer:
Cultivator.
Explanation:
Instruments such as cultivator replaced the animal drawn farm implements because these instruments works quickly and more efficiently. This cultivator has long teeth which soften the soil for better root penetration and aeration of the soil. This instrument works with high speed and finished its work in hours not days which make it more preferable in agriculture than animals.
B. The organisms can be helped or harmed. If it is helped then it is called mutualism, because both of the organisms mutually help each other (I.e clownfish and sea anemone). The symbiosis can be harmful to the host as well and this is called parasitism(i.e dogs and fleas). There is also a third term for symbiosis which is commensalism which benefits the non host but doesn’t effect the host (I.e barnacles on whales)
Untreated acute allergic reaction is a life-threatening situation because its symptoms can progress quickly. The most dangerous is the Anaphylaxis. It can be triggered by drugs, food, or injections, which a person may experience itching, swelling, difficulty in breathing, panic, and collapse. The worse is cardiac arrest when not treated immediately. Moreover, a prolonged illness may also develop as its late phase such as severe asthma.
Gravity is a force that pulls objects down. If there was no gravity the book would not fall, nor would it move unless it is acted upon by an outside force.
So your answer would be, The book would stay where it is
