D. They had larger beaks.
Due to the drought they would need to dig deeper for food. But their tiny beaks could not do that. So over time their beaks grew and adapted to the drought. Therefor the answer is D. They had larger beaks!
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The electrochemical impulse is composed of an action potential travelling from the dendrite to the cell body to the axon of the neuron. The main neurotransmitter is acetylcholine which is released at either the synapse or the neuromuscular junction.
Answer: The DNA would not be copied into RNA
Answer:
Gene therapy replaces a faulty gene or adds a new gene in an attempt to cure disease or improve your body's ability to fight disease. Gene therapy holds promise for treating a wide range of diseases, such as cancer, cystic fibrosis, heart disease, diabetes, hemophilia and AIDS.
D because these are all nonliving things that are vital to plant growth (photosynthesis)
D because commensalism is when one organism benefits (barnacle) and one is unaffected (whale)
A because mutualism is when both species benefit