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Environmental Health - ANSWERS'Aspects of public health concerned with the factors, circumstances and conditions, in the environment/surroundings of humans that can exert an influence Environmental Hazards - ANSWERSEnvironmental factors, which threaten or impair human health in some way ; (e.g. Contaminated water and food, chemical exposures, polluted air and soil, Vector-borne diseases, etc.) Identification of environmental hazards for human : - ANSWERSestablishing relationships betwee...

Core - ANSWERSInnermost zone of earths interior composed mostly of prayer and nickel it includes a liquid outer layer and a solid inner layer Mantle - ANSWERSLayer of earth above the court containing magma Magma - ANSWERSMolten rock Asthenosphere - ANSWERSLayer of earth located in the outer part of the mantle composed of semi-molten rock Lithosphere - ANSWERSOutermost layer of earth including the mantle and crust Cruat - ANSWERSIn geology the chemically to stink outermost layer of...

99% of the universe is this state of matter - ANSWERSplasma matter is made of : - ANSWERSatoms and molecules the higher the temperature...... - ANSWERSthe faster the particles move what is happening when you see you breath on a cold day?... - ANSWERSyou are watching gaseous water turn into liquid water 4 ways to classify matter - ANSWERSsolid, liquid, gas, plasma has a definite shape and volume - ANSWERSsolid changes shape but not volume - ANSWERSliquid changes both shape an...

(ii) An area receives significantly less precipitation over a period of time than it typically does. Describe one negative environmental effect in the area as a result of the decrease in precipitation. - ANSWERS• drought leads to prolonged shortages in the water supply. (a) A period of precipitation is one of the short-term conditions in the atmosphere referred to as weather. (i) Identify the layer of Earth's atmosphere where the circulation and mixing of liquids and gases produce wea...

Natural greenhouse effect - ANSWERSThe layer of greenhouse gases in the atmosphere retains the sun's radiation to heat the Earth at 15oC. It sustains all life on Earth. The most common greenhouse gas is water vapour Cause of natural greenhouse effect - ANSWERS- Volcanic eruptions - Forest fires - Methane through decomposition and wetlands Enhanced greenhouse effect - ANSWERSRising global temperatures due to greenhouse gases being put into the atmosphere because of anthropogenic (huma...

What is the water cycle? - ANSWERScondensation-precipitation-evaporation. Why is groundwater important? - ANSWERSIt's the best source of freshwater What are the positive and negative effects of building a dam? - ANSWERSPositive- energy/flood protection Negative -displaces resident/sediment removal Compare point-source pollution and non-point pollution. Give an example of each. - ANSWERSPoint-source pollution-from a single source EX: gas leak; Non- point sources- comes from many d...

gross primary productivity - ANSWERStotal amount of organic material fixed by autotrophs net primary productivity - ANSWERSproductivity minus the energy used in respiration Abiotic factors that effect the rate of primary productivity - ANSWERSmoisture/water; sunlight; carbon dioxide Describe what pyramid of numbers show - ANSWERSthe total number of individual organisms at each trophic level in the food chain of an ecosystem Explain the shape of the pyramid of numbers - ANSWERSA tree ...

What type of farming do most people in developing nations practice? - ANSWERSsubsistence farming Identify 3 characteristics that make the US food and fiber system successful. - ANSWERSFertile soil, a favorable climate, access to advanced machinery List 3 of PA's major agricultural products. - ANSWERSMilk, poultry+eggs, mushrooms What is the green revolution? - ANSWERSmodern farming method that uses scientifically produced varieties, fertilizers, pesticides, water and technology to in...

1. Select the best answer. _____ is a structural component of hair, skin, and nails. - ANSWERSKeratin 2. Select the best answer. _____ is a process that is used by cells to absorb substances that pass the cell membrane. - ANSWERSEndocytosis 3. Select the best answer. Another name for the phylum Apicomplexa is _____. - ANSWERSSporozoa 4. Select the best answer. Membrane-bound organelles that expand and contract as a way to pump water out of a cell are called _____. - ANSWERScontracti...

Which of the following is the control group for this experiment? - ANSWERSSoil with no grass Which of the following is a dependent variable in the experiment? - ANSWERSPercent change in mass of the soil sample Which of the following describes the independent variable in this investigation? - ANSWERSSoil samples taken from different locations Which of the following describes the dependent variable in this investigation? - ANSWERSPercentage of each particle size in each soil sample A s...