Answer:
Birds have a significant number of reduced muscles to help them reduce their weight. The most-developed muscles in birds are the flight muscles that they need to fly. The bones are mostly fused, reducing the need for muscles to hold the bones together. The skulls of birds are very thin and the beaks are very light.
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Answer:
The ecological footprint may be defined as the dependency of humans on nature. The ecological footprint support the economy or people of the country.
The main consequences that are related to the ecological footprints are the depletion and decrease of the natural resource. This might also cause the habitat loss of other species and the habitat fragmentation as well. The consequences also includes the increase in the pollution and natural calamities in an area.
Answer:
D. cell, tissue, organ, organ system, organism
Explanation:
also before cells there are also (and in order) atoms, molecules, organelles
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B.) Glucose because in order for that person to have energy that person has to have sugar to be active...