0
Add your answer:
Earn +20 pts
What time of day are dissolved oxygen levels the lowest?
Dissolved oxygen levels are typically lowest in the early morning hours just before sunrise. This is because during the night, plants and algae consume oxygen through respiration but do not produce oxygen through photosynthesis.
What time of day has the most dissolved oxygen?
Dissolved oxygen levels in water are typically highest during the early morning hours before photosynthesis begins and lowest in the late afternoon or evening after a day of sunlight has depleted the oxygen.
What is oxygen dept?
Oxygen dept is the time taken for the body to return the levels of oxygen to normal after physical efforts
What are trophlemotragine levels?
Trough lamatrogine levels are the level of the medication in the blood at its lowest point (at the furthest time from the last dose)
How and why do dissolved oxygen levels change over time?
Dissolved oxygen levels change over time due to factors like temperature, photosynthesis, respiration, and water movement. For example, oxygen levels tend to decrease at night due to lack of photosynthesis, while they increase during the day when plants produce oxygen. Factors like pollution and nutrient runoff can also impact oxygen levels negatively.
Does air conditioning lower oxygen levels?
Air conditioning does not lower oxygen levels in a room. However, improper ventilation in a closed room with air conditioning may lead to decreased oxygen levels over time. It's important to ensure proper ventilation when using air conditioning to maintain a healthy indoor environment.
How do the oxygen and carbon dioxide levels change over time?
Oxygen levels tend to remain relatively stable over time due to the balance between oxygen production from photosynthesis and oxygen consumption by organisms. Carbon dioxide levels, on the other hand, can fluctuate due to human activities such as burning fossil fuels and deforestation, leading to an overall increase in atmospheric CO2 concentrations over time.
Why does the level of dissolved oxygen go down after sunset?
noAnswer:There are several factors that could impact the levels of dissolved oxygen in natural water during the evening and night time. None of these are over riding enough to state that the DO levels would go up or down in all situations:* Cooler temperatures would increase the solubility of oxygen in the water. Oxygen already in the water would tend to stay there. * Temperatures in the water would go down decreasing the activity of any decomposition, slowing the reduction of oxygen levels. * Plants (algae etc.) would stop producing oxygen by photosynthesis* Plants would continue their respiration and consume oxygen * Winds are often calmer in the evening reducing aeration of the water through wave action
How has the amount of oxygen in earths atmosphere changed over time?
The amount of oxygen in Earth's atmosphere has fluctuated over geological time scales. Oxygen levels were much lower in the past, particularly in the early stages of Earth's history. Around 2.4 billion years ago, there was a significant increase in oxygen levels known as the Great Oxidation Event, leading to the current levels of approximately 21% oxygen in the atmosphere.
What were the oxygen levels during the ordovician time period?
During the Ordovician period, oxygen levels were estimated to be around 15-35% higher than present-day levels. This increase in oxygen was likely due to the proliferation of marine life, including photosynthetic algae and plants, which helped to oxygenate the atmosphere.
At what time of day are dissolved oxygen levels most likely to be highest?
Dissolved oxygen levels are typically highest during daylight hours when plants are photosynthesizing and producing oxygen. This is usually in the afternoon when the sun is highest in the sky.
What process is most responsible for the increase in early Earths atmospheric oxygen levels?
The process most responsible for the increase in early Earth's atmospheric oxygen levels is photosynthesis. This is the process by which plants, algae, and some bacteria convert carbon dioxide and sunlight into oxygen and energy. Over time, the accumulation of oxygen from photosynthesis led to the rise in atmospheric oxygen levels.
