Answer:
The biological concept of species states that if 2 organisms can interbreed and produce fertile offspring they belong to the same species.
Scientist could observe them under natural conditions and check if they can reproduce to produce fertile offspring.
Surface water (rivers and lakes) are the most available source of fresh water. The other sources of fresh water are largely unavailable.
Water on earth could be fresh water or salt water. The difference between the two is that freshwater is not salty. There is a limited quantity of available freshwater on earth.
Fresh water is found in glaciers, surface lakes and rivers and groundwater.The order of decreasing availability of fresh water on earth is ice> Groundwater > lakes and rivers (surface water).
Unfortunately, the source of freshwater that can easily be obtained for human use is surface water (lakes and rivers). There is only about % available freshwater in rivers and lakes. About 87% of the world's fresh water supply is locked away in glaciers.
Given the limited availability of fresh water sources, the possibility of an water challenges in the world can not be over emphasized. Definitely, there may not be enough water in the future hence water conservation efforts must be taken seriously.
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the opposite make an attraction like positive and negative , and negative and positive. if it was negative and negative or positive and positive it wouldn't make an attraction.
The potential sources of measurement error for muscular endurance tests are Equipment, technical skill, client factors, or environmental factors. Client factors are items that can be avoided with adequate testing preparation.
Strength training and development are thought to be crucial for improving the physical health of the population as well as for providing support and maintaining good posture. It is a fact that people need strength for their daily activities, and some of these physical efforts are sustained for extended periods of time. When assessing the musculoskeletal functions and physical capacities of the population, it is vital to take into account this physical ability because it has grown to be a significant factor in the physical condition.
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