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This sign warns people about which hazard? A sharp objects B infected tissues

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This sign warns people about which hazard? A sharp objects B infected tissues

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  1. Day 71Which activity requires the useof safety goggles?A sampling a population of birdsB measuring the temperature of soilC examining a cell undera microscopeD mixing two chemicals to makea solutionWhat would the width of the capillaries be when the temperature was 17.5? a. 6.0 b. 4.5 c. 4.8What characteristic do these leaves have that allow them to expand their range quickly? a. the shape of the leavesb. the number of leavesc. the length of the branches.

  2. Day 72Which of the models below represents the molecule that contains genetic information? The length of a fetus is measured over time. Which of these would be the best way to display the information?

  3. Day 73A large tree fell in a dense forest. Several months later many new plants were growing in the area of the fallen tree. The new plant growth most likely occurred as a result of an increase in which factor?A the amount of available oxygenB the amount of available waterC the amount of available sunlightD the amount of available carbondioxideWhich measurement range is the best estimate for the length of a pond microorganism’s body?F 0.002 – 0.2 millimetersG 0.002 – 0.2 millilitersH 2.0 – 200 millimetersJ 2.0 – 200 milligramsHint: measure in meters, liters, or grams? Hint? large or small? This sign warns people about which hazard? A sharp objects B infected tissues C radioactive materials D poisonous chemicals

  4. Shown below are the steps a student will complete in order to study the effect light has on the number of microscopic algae in freshwater. 1. Place one jar of pond water in the sun and one in the shade for one week. 2. Use a microscope to count the number of microscopic algae in one milliliter from jar A and one milliliter from jar B. 3. Label two jars A and B. 4. Collect two jars of pond water. Which of these is the best order in which to do these steps? A 3 – 4 – 2 – 1 B 4 – 2 – 3 – 1 C 3 – 4 – 2 – 1 – 2 D 4 – 2 – 1 – 2 – 3 Day 74 The alfalfa plant gets its nitrogen from bacteria that live in its roots. In return, the alfalfa provides food for the bacteria. Which term best describes the relationship between the alfalfa and the bacteria? F predation G mutualism H parasitism J competition Hey! I like when you help me! The feeling is mutual!

  5. Day 75These organisms were foundclinging to the bottoms of smallrocks in a stream.Which unit would be mostappropriate for measuring thelength of these organisms?A millisecondB milliliterC millimeter D milligram

  6. Day 76To which order does Oklahoma’s state bird, the scissor-tailed flycatcher, belong?

  7. Day 77The drawings represent the lowerjaws of four animals. Three of theanimals have similar diets. Whichdrawing represents the animalwith a different diet?

  8. Day 78

  9. Day 79 A student performed an activity using young plants . Test tubes containing the young plants were placed at different angles and labeled “Trial 1,” “Trial 2,” “Trial 3,” and “Control.” Which of these diagrams represents the one labeled “Control”?

  10. Day 80

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