The sun is a vital part of the earth, so if it changes energy levels, it will clearly have an affect on the earth. If the energy increases, it'll most likely dry out the grass and melt the snow, etc. If it decreases, the snow could freeze and change the climate.
To enable primary cells to be prepared for excised tissues
The correct answer to this question is "Poriferia".The common example of this group of animal is the sponge. Sponges are the basalmost clade of animals of the phylum Porifera.
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Answer:
A
Synapse, also called neuronal junction, its carries of information through electric nerve impulses between two nerve cells (neuron) or between a neuron and a gland or muscle cell (effector).
C. Elements cant be separated by physical means
