Environmental Science Visual Do Nows 

As review for the End of Course assessment, all Do Nows (Warm Ups) for Quarter 3 will be a visual analysis of an image, graph, chart, etc. Students are to examine the graphic provided to them, identify the content, and then write as much as they can/know in the five minutes allotted. Students may write beyond the graphic as long as they explain the connection they have made. 
Flower Do Now 
A - Stigma, B - Anther, C - Petal, D - Sepal, E - Ovary, F - Stem, G - Ovules, H - Filament *Not Labeled - Style 
The flower is the reproductive structure of a plant (although some plants have cones). The female system is called the pistil and includes the stigma, style, and ovary (ovules) while the male system is called the stamen and includes the anther and filament. The ovary contains the female gametes (eggs) while the anther produces the male gametes (pollen, sperm). Pollinators such as wind, water, and some animals help the sperm travel from the anther to the stigma where pollination takes place. Then, the pollen travels down the style to the ovary where fertilization takes place. The ovary eventually becomes the fruit while the ovules become the seed. 
Water Molecule Do Now 
This is an image of a water molecule. Water is formed by one oxygen atom and two hydrogen atoms. The oxygen atom and the hydrogen atom don't share electrons equally so the oxygen is slightly negative and the hydrogen atoms are slightly positive. This gives a water molecule two opposite sides making it a polar molecule. Because of the different charges, water molecules are attracted to each other and form hydrogen bonds. Water's polarity and hydrogen bonding give it four unique properties: cohesive and adhesive behavior, high specific heat, universal solvent, and expansion upon freezing. Each property helps life in someway. Cohesive and adhesive behavior helps your blood flow through your body and helps plants get water and nutrients from their roots to the rest of their organs (capillary action). Water's high specific heat helps organisms maintain homeostasis and keeps our climate regulated. Because water is a universal solvent, organisms are able to consume food and nutrients and break it down in our bodies. Lastly, because water expands upon freezing, ice floats. This allows aquatic ecosystems to thrive even in low temperatures. 
Food Web Do Now 
A food web shows the pathway of energy and nutrients within an ecosystem. There are different roles in a food web. Producers make their own food through photosynthesis. They can also be called autotrophs. Organisms that eat ONLY producers (plants) are called herbivores. Organisms that eat only meat are carnivores and organisms that eat both plants and animals are called omnivores. These are all examples of heterotrophs. Any organism that eats producers in a food web are called primary consumers. Organisms that eat primary consumers are called secondary consumers. And organisms that eat secondary consumers are called tertiary consumers. As you move up the food web, only 10% of the energy available is transferred to the next level. One small change in a food web can cause big consequences because of all the connections. 
Cell Membrane Do Now 
Every cell has a cell membrane. The cell membrane protects the cell and regulates what goes in and out. The cell membrane has four parts: carbohydrate chains (identify the cell), cholesterol (structural support), protein channel (allows some materials to cross the membrane), and the phospholipid bi-layer that is responsible for the cell membrane's unique features. Materials can cross the membrane in two ways: active transport which requires energy and moves materials from low to high and passive transport which does not require energy and moves materials from high to low. 
Water Cycle Do Now 
The water cycle is powered by the sun. Water is heated and evaporates to form water vapor (gas). In addition, plants release water vapor into the air (transpiration). The water vapor condenses to form clouds. Then, the water returns to earth's surface as a liquid or solid form of precipitation. When it reaches the surface of the earth it is either absorbed by the ground to become ground water or it runs over the surface of the earth as runoff. 
Aquatic Ecosystems Do Now 
Aquatic ecosystems have a photic zone (where there is light) and an aphotic zone (where there is no light). The most life is found at the top in the photic zone because photosynthetic organisms (which are the basis of the food chain) can be found there. There is the most salt at the bottom. The most oxygen is at the top. The most light is at the top and its darker at the bottom. It is warmer at the top and colder at the bottom. As you go down, pressure increases.