Healthy ecosystems depend on plant and animal species as their foundations. When a species becomes endangered, it is a sign that the ecosystem is slowly falling apart. Each species that is lost triggers the loss of other species within its ecosystem. Humans depend on healthy ecosystems to purify our environment.
The CORRECT answer is C.) C, A, B, D
An Ovule is a plant organ that consists of an embryo, tissues and a protective coating.
Answer:
C
Explanation:
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