Sponges have specialized cells and an endoskeleton, but they lack tissues and body symmetry. ... They include jellyfish and corals, both of which have radial symmetry. All cnidarians have nematocysts, and many are bioluminescent. They may exist in medusa and/or polyp form.
Three reasons a species could become extinct include, deforestation, being overhunted, not enough food available.
I think b would fit more as the mitochondria, d would be the endoplasmic reticulum, and e would be lysosomes
decomposition of what was alive then the remains are buried by sediments which results in fossilization
Answer:The net force is the sum of all the forces acted upon an object. The direction of force depends on which side you are taking as a positive and negative force. If the force of 22 newtons is positive and the force of 13 newtons is negative, they are actng on the object on different directions, thus in order to get the net force, we just sum them up.
newtons
The net force is +9 Newtons.
Explanation
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