EVERYDAY SCIENCE

Detailed explanation-1: -Organs are structures made up of two or more tissues organized to carry out a particular function, and groups of organs with related functions make up the different organ systems.

Detailed explanation-2: -Higher levels of organization are built from lower levels. Therefore, molecules combine to form cells, cells combine to form tissues, tissues combine to form organs, organs combine to form organ systems, and organ systems combine to form organisms.

Detailed explanation-3: -Answer and Explanation: Cells combine to form tissues. In all multicellular organisms, cells join together to form tissues, which further combine to form organs, which further join to form a system.

Detailed explanation-4: -An organ is an aggregation of tissues that form a structural unit and execute a specific function.

Detailed explanation-5: -When different types of tissues are organized together to perform a complex function, it’s called an organ. The heart is an organ. It has muscle tissue, connective tissue, and nerve tissue all working together to pump blood. Organs can do more than one function and each function can be pretty complicated.