<span>The species would decrease in number and eventually die off. </span>
Active transport requires that the cell move engegy that it has obtained the food to move the molecule threw the cell membrane.The passive transport doesn't required as much energy for the molecule to move....
The hindbrain of the embryo develops into the pons, the medulla oblongata of the spinal cord and the cerebellum.
<h3>What is the cerebellum? </h3>
The cerebellum is a prominent part of the hindbrain and is located just above the brainstem. The cerebellum controls all the voluntary movements of the body and is also responsible for maintaining balance and posture.
The cerebellum is said to make up for 10% of the brain's volume but has more than 50% of the brain's total neurons.
The cerebellum is made up of two parts; a cerebral cortex, a layer made of folded tissue which contains most of the neurons and cerebral nuclei, an inner part which contains the neurons responsible for communication.
Therefore, the hindbrain develops into the pons, medulla oblongata and cerebellum.
Read more about the cerebellum, here
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Providing energy. Carbs are a quick source of energy and easily broken down. Lipids are stored energy that can be broken down when needed. Both provide energy but in different ways
The most likely explanation for the variation is the offspring were produced from different combination of genes. A single pair of gold fish mentioned in the question means a male and a female gold fish. The two of them mated and contributed different genes to the fertilized fish eggs, this results in production of various body shape and colouration which is known as variation.
