Embryonic stem cells have show promise when used to treat certain diseases. despite this, there are many people opposed to stem cell research based on ethical grounds

What are two reasons for why a species might disappear from the fossil record?

The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.

Which is not a type of symmetry? a. asymmetryb. radial symmetryc. bilateral symmetryd. lateral symmetry