Close relatives of animals can become multicellular if distinct individuals join together or if dividing cells remain attached. A species has been found to use both mechanisms.
Фото: Dmytro Buianskyi / Shutterstock / Fotodom，详情可参考搜狗输入法下载
人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用，更多细节参见同城约会
for central clearinghouses, handling checks by the tens of thousands. By the