Answer:
Salinity in an estuary varies according to one's location in the estuary, the daily tides, and the volume of fresh water flowing into the estuary. In estuaries, salinity levels are generally highest near the mouth of a river where the ocean water enters, and lowest upstream where freshwater flows in.
Explanation:
In short, plants require sunlight because that is how they make their food.
Longer version: Plants use photosynthesis to produce glucose for food with O₂ as a by-product. Without sunlight, photosynthesis cannot happen, and so would have no food to use.
In much of a digestive tract such as the human gastrointestinal tract, smooth muscle tissue contracts in sequence to produce a peristaltic wave, which propels a ball of food (called a bolus while in the esophagus and upper gastrointestinal tract and chyme in the stomach) along the tract.
Answer:
Explanation:
Pausing can be detected by gel electrophoresis and autoradiography in experiments which involves the transcription into Vivo with radiolabeled nucleotides. After incubation isolate the labelled RNA products and subject to gel electrophoresis and audio radiography. Any paused species will definitely accumulate and can be detected.
