Awoman gave birth to a child with a bent vertebral column. which is a possible reason?

the mesoderm layer may have developed abnormally.

the ectoderm layer may have developed abnormally.

the endoderm layer may have developed abnormally.

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

What initially causes a nerve impulse? release of enzymes out of the neuron movement of chemicals into the dendrites of the neuron pathogens attacking the dendrites of the neuron red blood cells bathing the neuron

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.