Which organism is an annual? sequoia tree pea plant moss fern

Pea Plant

Explanation:

Annual plants are those that complete their life cycle in a year and then dies, and had to be planted again from the seeds after a year. Pea plant lies in this category of plants.

While there is an other category of plants that complete their life cycles longer than a period of two years, such plants are called perennials. Such plants continue growing and continue the production of seeds year after year.  All else plants described in the question; Sequoia tree, moss, and fern are perennials.

Pea Plant

Explanation:

Im on Edgeunity and taking the quiz. Wish me luck!

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom