Apoint mutation changes the dna sequence cga to cgt, but the same protein is still produced. which point mutation occourred?

A silent mutation.

Explanation:

A silent mutation is defined as a mutation that changes codon, but the amino acid stays the same.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.