The need for energy, gained by respiration and photosynthesis, is the driving force of the oxygen cycle.
The Earth’s history has had a significant effect on the characteristics of its organisms and biomes. How was the Carboniferous period different from the Devonian period? a. Forests and land plants evolved during the Carboniferous period. b. There were vertebrates in the Carboniferous period, but not in the Devonian period. c. There were an increased number of land-based organisms in the Carboniferous period. d. There were vertebrates with four legs in the Devonian period, but not in the Carboniferous. Please select the best answer from the choices provided
Why is this a scientific question?“Do people perform better on exams when they wear their favorite color?”
Which of the following plants is not found in the tundra?a.caribou mossb.lousewortc.bearberryd.ocotillo
Organisms that live in deciduous forests have developed unique adaptations that aid in their survival. Which of the following is not an adaptation that characterizes deciduous trees? a. thick bark b. green year round c. broad leaves d. leaf loss Please select the best answer from the choices provided
Which best describes the nature of photosynthesis?
Why is there limited vegetation in the tundra?a.The soil is frozen and devoid of nutrients.b.There is frequent flooding and the soil is nutrient-poor. c.There is frequent flooding and the soil is nutrient-rich.d.The soil is frozen and contains pockets rich in nutrients.
The rarest distribution pattern in nature is random.
Why is this considered a nonscientific question?“What color is a great horned owl?”
The human genome project identified the sequence of base pairs in human DNA and identified several genes. Which question would least likely lead to a scientific investigation based on these findings?
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