Which statement about ecosystems is true

The correct answer is D. Ecosystems are always smaller than a biome.

Explanation

A biome is a set of abiotic factors that form a territory in which different organisms inhabit. In addition, biomes encompass a set of ecosystems such as tundra, rainforest, savannas, wetlands, among others. On the other hand, an ecosystem is a community of organisms that interact with other organisms and abiotic factors. According to the above, the correct answer is D. Ecosystems are always smaller than a biome becaause biomes includes ecosystems with similar features.

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explanation:

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water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.