19 Which of these structures is a single tissue? A chloroplast
phloem
O O O
urethra
uterus

The Phloem is a single tissue.

Explanation:

A chloroplast is an organelle (which is found in plant cells and is responsible for photosynthesis).

Phloem is a tissue in plants that transports the soluble organic compounds made during photosynthesis in a process called translocation.

The Urethra is a fibromuscular tube that connects the urinary bladder to the urinary meatus for the removal of urine from the body of both females and males.

The Uterus is a hollow muscular organ located in the female pelvis between the bladder and rectum.

digestion

it excretes wastes

there's no big difference.

explanation:

the only little different between a rabbit and bunny is just that bunnies are much smaller than rabbits. bunnies are basically baby rabbits.