Which type of tissue in a blastula gives rise to skin and eyes in an animal

The ectoderm develops into the surface ectoderm, neural crest, and the neural tube. The surface ectoderm develops into: epidermis, hair, nails, lens of the eye, sebaceous glands, cornea, tooth enamel, the epithelium of the mouth and nose.

answer: 45

explanationyou have to add as well to be it could be

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.