Its conducted by the conjugation of two mature cells
CPR is short for cardiopulmonary resuscitation. It’s a life saving medical procedure which is given to someone who is in cardiac arrest. It helps to pump blood around the person's body when their heart can’t. To carry out CPR a person presses up and down on the casualty’s chest (chest compressions<span>) and gives them a series of rescue breaths to help save their life when they are in cardiac arrest. At 6 min, CPR was started with an automated chest compressor at a rate<span> of 200-240/min.
more information, https://www.ncbi.nlm.nih.gov/pubmed/19520479
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Answer:they possess notochord,dorsal tubular nerve cord , pharyngeal pouches
Explanation:chordates are animals which possess the notochord.examples are humans,birds,fishes etc
At a time in the life cycle,a chordates possesses a stiff,dorsal rod which is supporting in nature (the notochord).
They also possesses a tail that extends from behind the anus.
They possess a hollow nerve cord.
They possess gills slit.
These characteristics are present developing embryo and may disappear as the embryo matures.
In humans,the notochord is replaced by the spinal column of the vertebrate.
An autosomal trait is a characteristic arising from genes located on chromosomes that are not gender determining.
The answer is B (speed up chemical reactions).
