4. which of the following statements is not correct?
a. an organ is made up of many tissues to perform a similar function.
b. a community is a collection of all the populations in an area.
c. atoms are made up of many living cells
d. an ecosystem comprises of all biotic and abiotic factors in an area

What is called the "building block" of life?

What is an endocrine function? (apex) a. esophageal glands release mucus into the esophagus b. salivary glands release saliva into mouth c. swear glands release sweat to the skin d. the pineal gland releases melatonin into the bloodstream

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.