The study pushes back the clock on the origin of Earth's water by hundreds of millions of years, to around 4.6 billion years ago, when all the worlds of the inner solar system were still forming. Scientists had suspected that our planet formed dry, with high-energy impacts creating a molten surface on the infant Earth.
Answer: 4.6 billion years.
1. The correct answer is option A
The thickest layer is Dermis which is made up of two layers papillary and reticular. The reticular dermis is the lower layer of the dermis and is made up of dense irregular connective tissue featuring collagen fibers.
2. The correct answer is option E
Bone is composed of fibrous and mineralized connective tissues which is enriched in collagen and calcium phosphate.
3. The correct answer is option C
Muscles are composed of two major protein filaments: a thick filament composed of the protein myosin and a thin filament composed of the protein actin. These two filaments slide over each other to repetitively contract the muscles.
Answer:
absorb the oxygen from water .. then swallowed by the mouth and pumped out the gills.... then pumped out behind the operculum or gill cover
Explanation:
just did it
