Question

envs - criteria such as salinity, depth, and whether the water is standing are used by scientist to -

• determine the number of species in a body of water
• measure net primary productivity in lakes
• classify aquatic ecosystems
• distinguish aquatic ecosystems from terrestrial ecosystems

envs - in temperate rain forests, trees such as cedars and spruces, which do not lose their leaves at any time of the year, are called -

• coniferous
• chaparral
• deciduous
• succulent

envs - fish, cattails, frogs, waterlilies, dragonflies, and all other living things in a pond make up -

• a biosphere
• a population
• a community
• an ecosystem

Explanation:

1. Salinity, depth, and water - sharing status are key factors in classifying aquatic ecosystems. These criteria help scientists group and understand different types of water - based environments.
2. Coniferous trees, such as cedars and spruces, are evergreen and do not shed their leaves seasonally.
3. All the living organisms in a pond, like fish, cattails, frogs, waterlilies, and dragonflies, together form a community. A community refers to all the populations of different species that live and interact in a particular area.

Answer:

1. C. classify aquatic ecosystems
2. A. coniferous
3. C. a community