Strategies that can be implemented to reduce carbon emissions include catalytic converters compaction of soil deforestation renewable energy can choose multiple if needed

According to the population pyramid, in 2000 china had about 120 million people in which age-group?

The pollution crisis in the soviet union was cause by

In shallow water at the beach, manuel saw an animal whose body was protected by hard plates. its body also had radial symmetry. the animal pumped water into its tube feet to move. which invertebrate group does this animal belong to? a. mollusks b. echinoderms c. sponges d arthropods