Which sequence best represents the different levels of organization of multicellular organisms from least complex to most complex?

a) cell -> organ -> tissue -> organ system -> organism
b) cell -> tissue -> organ -> organ system -> organism
c) organism -> organ system -> organ -> tissue -> cell
d) organism -> organ -> organ system -> tissue -> cell

Accroding to the given squence the cell, tissue, organ, organ system, organism. Sequence best represents the different levels of organization of multicellular organisms from least complex to most complex. The reason is that the cell is the smallest or basic unit of life therefore, it is considered as least complex.

The group of cells form tissue and the tissues when accumulate then there will form an organ. After organ, the organs are gathered to make a system which is known as organ system. When the organ system is made then an organism appears so after this organisms or species form population and then community is formed by population. Different communities form an ecosystem. The ecosystem forms biosphere.

exists as it is today

casts off matter as planetary nebula.

begins nuclear fusion at its core

enters red giant phase

becomes a white dwarf

becomes a black dwarf

Tiles

Explanation:

The solar system is formed over 4 billion years ago. It is formed from big cloud and gases called nebular.

The nebular collapsed and be one denser. The core of nebular becomes hot and undergo nuclear fusion reaction. nuclear reactions tends to expand it outwards. The gravitational collapse is balanced by the expansion due to fusion energy.

It will then expand and cool to become red giant. It will then shrink and heat up again to become white dwarf. These will slowly cool down for years.