Hi
Answer: Its origin is not sunlight
I hope that's help !
Explanation:
<u>the Paleozoic Era </u>
The Precambrian era describes a period of time that pre-dates Cambrian. This time typically references the entire period of the history of earth before the formation of rocks containing identifiable fossils occurred. It covers the majority of Earth’s history and is divided into the Hadean, Archean and the Proterozoic era.
Just before the Cambrian eruption, in the Paleozoic Era the environment was oxygenated, culminating in an explosion of new life in the Proteozoic Eon (2500-541 million years ago) in the form of primitive blue-green algae named cyanobacteria and oxygen based species. Multicellular species followed later, along with structure at higher levels, and complex life. Oxygen levels grew gradually over this period of time, from low levels.
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Answer:
B
Explanation:
there are complex feeding mechanisms at work to protect the other species in the food web
Mesonychids are the hypothesized link between whales and the hooked mammals.
<u>Explanation:</u>
The scientific name of the Mesonychids are the mesonychia. Taxonmically hippos and pigs are the sister taxon to whales. The mesonychids are the evaluation of whales was determined within an extinct group of carnivores hooved animals. They found in the Asia and Europe.
Mesonychids live in both the land and sea world. The generation transformation influence the link between whales and the hooked mammals. its is also closely related to the cetaceans, which includes dolphins and whales.
