If roundworms make important contributions to soils, then where are roundworms useful in an ecosystem? Answer choices: - killing animals - soils - fields - bacteria - eating plants - wetland - food - alveoli
soils

If plants supply most of the food consumed by people worldwide, then most of the food consumed by people worldwide comes from? Answer choices: - humans - trees - Energy - animals - plants - vitamin C - honeybees - Earth
plants

Q: If most salamanders find mates by perceiving odors, then most salamanders find mates by what? Answer choices: - perceiving odors - Chemical energy - competing for resources - releasing colors - mechanical waves - during the day - spreading germs - sharing food
A: perceiving odors

Question: If fungi can decompose trees, then what can fungi decompose? Answer choices: - mildew - sound - taste - bushes - bamboo - peat - trees - oil
Answer: trees

*Question*
If caves can be formed by carbonic acid in groundwater seeping through rock and dissolving limestone, then what is one element used to create caves? Answer choices: - sunlight - heat energy - Calcium carbonate - hydrogen and oxygen - calcite - carbonic acid - less water - salinity
**Answer**
carbonic acid

If sea squirts reproduce sexually, then how do sea squirts reproduce? Answer choices: - movement - competition - seeds - Sexually - evaporation - adding heat - allow growth - grow
Sexually