The appearance of a pink or blue color in a thioglycolate tube means that oxygen is present in that part of the tube. The different colors depend on which dye has been added. Pink color comes from resazurine, and blue is from methylene blue.
Answer:
sexual reproduction
Explanation:
asexual would not result in any variability
Answer:
A.true
Explanation:
"""During their 150 million year existence, animals changed drastically in size, body, shape, and flying ability. a modification of an organism or its parts that makes it more fit for existence."""
Georgio is jogging barefoot along the beach when he suddenly steps on the sharp edge of a broken shell. He instantly feels pain due to the message carried to his brain by<u> dendrites.</u> He then slowly walks home with an achy foot. The message of the ache is carried by <u>neurons.</u>
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The nervous system has electrical cells that are trained to transmit and receive messages. Through the use of electricity, people can communicate by transmitting messages to one another. This voltage is produced in neurons by the movement of charged ions. salt atoms with positive or negative charges that pass through the cell membranes and cross the cell's outer membrane. The neuron has dendrites, which are branches (like a tree) that receive messages, and an axon, which is a longer, more straightforward projection (like a tree trunk), that sends information. Synapses. Axon ends include the neuron communication junction, where vesicle fusion releases chemical signals. Neurotransmitters are the chemical messages that the nerve cell releases.
Learn more about neuron here-
brainly.com/question/24217914
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Answer:
Sleep apnea.
Explanation:
Sleep apnea:
Sleep apnea is considered as serious sleep disorder in which patient's breathing during sleep repeatedly stop and start along with snoring.
So, here the scenario that Sarah's grandfather is suffering from sleep apnea because he takes nap on recliner and suddenly stop snoring and stop breathing and again resume the breathing along with snoring.
