The blastocyst is comprised of three layers. Which of these layers will develop into the digestive and respiratory systems?
Question 3 options:

Maxoderm

Mesoderm

Ectoderm

Endoderm

Which of these pieces of safety equipment should be worn when operating a chainsaw

True or false a fertilized cell divides many times to form an embryo

Which of the following is not true about a good stretching routine? a). can be hurried up once have it memorized b). improves issue elasticity and flexibility c). should last a minimum of five minutes d). prevents injury and increase athletic performance