<span> After fertilization, the </span>zygote<span> undergoes cleavage to form the blastula. The blastula, which in some species is a hollow ball of cells, undergoes a process called gastrulation, in which the three germ layers form.</span>
Answer:
it's may be genetic.
<h2>hope it helps.</h2><h2>stay safe healthy and happy.</h2>
Why are they being abused?
Does a animal that is going to be used for human consumption deserve to be treated cruelly?
Does the USDA regulate pig farms and treatment of the pigs?
Are there sanctions for cruelty?
How are the pigs slaughtered, humanly or not?
Answer:
Digestive system and Circulatory system
Explanation:
The Digestive system has the stomach, small and large intestine- these are all responsible for breaking down food into smaller pieces and on the other hand the circulatory system helps to distribute the broken food around the body for necessary absorption by the body cell.
