Which of the following best describes angiosperms? They produce pollen grains and ovules in cones.
They reproduce through spores instead of seeds.
They need to live in damp conditions where water is readily available.
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They produce seeds which are encased by an outer layer such as fruit.

They produce seeds which are encased by an outer layer such as fruit.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this