blastulas

"The farmer used fertilizer to promote the fertilization of the soil, making it ready for planting. "

"Professor Davies is a learned scholar, renowned for her deep knowledge of ancient history. "

"The development of this story has been slow."

"The bouncy ball was perfectly spherical. "

"The teacher filled the bottle with water. "

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

"Stay on your side of the divide, please."

"The scientist studied the embryo to understand how the early stages of development occur. "

"He built himself a cabin in a hollow high up in the Rockies."

"The project consists of three main parts. "

"My son is taking biology classes at school, learning about different types of plants and animals. "

"She packed her case rapidly and hurried out."