Question

What is the main idea of these two sentences?

Many flowers are what we call annuals, their entire life cycle — from seed to death — takes just one year. They might leave behind sleeping seeds that could sprout again in the future, but the flowers, roots, stems and leaves all fade away as soon as the season is done.
Annuals only live for one year and will not return.
The life cycle of a plant is seed to death
Plants have flowers, root systems, stems, and leaves.
Scientists think annuals are the first type of plant that existed.

Answer 1

Answer:

Many plants live and die within one growing season, so gardeners must replant them each spring. But others have evolved to linger year after year, so they can blossom anew without any help from human horticulturalists (that's someone who studies the science of plants). Many flowers are what we call annuals.)

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