Two atoms that have the same number of protons but different number of neutrons are called isotopes. Atoms with the same element but with a different number of neutrons.
Answer:
A. Plant cells have cell walls and chloroplasts, Animal cells do not.
Explanation:
The answer is that Both aid in the expansion and relaxation of lungs. Diaphragm and the rib muscles are vital in the breathing process. During inhalation the intercostal muscles contract, expanding the ribcage, the diaphragm contracts, pulling downwards to increase the volume of the chest, pressure inside the chest is lowered and air is sucked into the lungs. During exhalation the intercostal muscles relax, the ribcage drops inward and downwards, the diaphragm relaxes, moving back upwards, decreasing the volume of the chest, the pressure inside the chest increases and air is forced out.
A) The data to support his hypothesis, so he should investigate if the same change happens in the density of solid water.
Biological Classification.
The classification system starts with a group with a wide variety of organisms and becoming more selective as the groups get more specific.
Additional information: Carl Linnaeus classified organisms by shared characteristics.
