Answer:
produced at one at a time.
Explanation:
human egg are not produced only at one time.
Cells are the basic building blocks of life, which can join together to form tissues, while different groups of tissues join together to form organs. These organs are then connected together to form organ systems, such as the digestive system, which includes the stomach, esophagus, intestines and other organs.
1990. Do not let the partial collapse during 1980s confuse you.
