Cirrostratus:This sheet, or layer, of high-level cloud is made of ice crystals and is often the forerunner of rain. The sun may shine weakly through the cloud, and a ring or halo can often be seen around the sun or moon.
Answer:
Transpiration
Explanation:
Plants lose gallons of water every day through the process of of transpiration
Answer:It is necessary because you need to understand other people's reasoning and answers and compare them to yours to see if both you understand.
Explanation:
Answer:
1) Observation: "I've seen that frog eggs in ponds that receive runoff from farm fields sprayed with herbicides hatch at lower ratesthan those unaffected ponds."
2) Hypothesis: "The hatching success of frog eggs is affected by exposure to herbicides."
3) Prediction: "If frog eggs are exposed to elevated levels of herbicides the hatching success of the eggs will decrease."
4) Test: In the laboratory, raise frogs in pond water with varying concentrations of herbicide, and measure hatching successrates.
5) Result: Analysis of experiment data concludes that herbicide levels affect hatching rates.
If inhibiting thyroid hormone release with PTU (propylthiouracil) in an experiment, the <u>experimental</u> group receives PTUand the <u>control</u> group receives no PTU.
<h3 /><h3>What is propylthiouracil (PTU) used for?</h3>
Propylthiouracil is used to treat Graves' disease and hyperthyroidism, a condition where the thyroid gland produces too much thyroid hormone.
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