True or false? many new major animal body plans have evolved since the cambrian about 550 million years ago.

Two critical interventions to turn around the opioid crises are:

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

When ash and dust begin to settle on the ground, they eventually become compacted by