Cells are the most basic units building units of life. All living things are composed of cells.
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A rabbit gets eaten by plenty of predators. It is on the menu for animals from the big wolves, coyotes, hawks and even gets attacked by little animals like raccoons as well. Not to mention our domesticated animals like dogs and cats.
Foxes tend to stick to smaller animals and also seeds and berry's. They eat fish mice and you guessed it. Rabbits.
Answer: 1500kg/m^3
Explanation: Assuming the cube was not large enough to float if it displaced 30cm^3 of water then it has a volume of 30cm^3. Density is just mass/volume so 45g/30cm^3 = 1.5g/cm^3. To convert this to kg/m we need to multiply by the conversion factors of the units. 1.5g/cm^3 • 1kg/1000g • 1,000,000cm^3/1m^3 = 1500kg/m^3.
It uses organs from other systems and from all part of the body.