metazoan

"My teacher explained the new math concept, and I understood it perfectly. "

"The development of this story has been slow."

"During embryonic development, the ectoderm differentiates to form the skin and brain. "

"The students are developing their reading skills in their English class. "

"The library books are classified by subject, so finding a book on history is easy. "

"My family has a different ideal for my future than I do. "

"The small boat undergoes the bridge as it travels down the river. "

"Because of its complex structure and specialized cells, the scientist classified the organism as multicellular. "

"The endoderm, one of the early layers of cells in a developing embryo, will eventually form the intestines and other parts of the digestive system. "

"To explain a chapter of the Bible."

"During the early development of a puppy, the mesoderm layer gives rise to its heart, bones, and muscles. "

"Scientists study different organisms, such as bacteria and plants, to learn about life on Earth. "