Question

Срочно! 30 баллов! Почему в земле кислорода больше чем над землей(в воздухе)?

Answer 1

Объяснение:

в земле находится вода, а там миллиарды маленьких организмов они издают кислород, а деревьев меньше чем организмов

вроде так ~^^~

Answer 2

Why is there more oxygen in the ground than in the air above it?

The presence of oxygen in the Earth's atmosphere is primarily due to photosynthesis, which is the process by which plants and some microorganisms convert carbon dioxide and sunlight into oxygen and glucose. This process occurs in the green parts of plants, such as leaves, where chlorophyll captures sunlight and converts it into chemical energy.

Photosynthesis takes place in the chloroplasts of plant cells and involves the following steps: 1. Light-dependent reactions: These reactions occur in the thylakoid membranes of the chloroplasts and require sunlight. During this process, light energy is used to split water molecules into oxygen, hydrogen ions, and electrons. The oxygen produced is released into the atmosphere as a byproduct. 2. Light-independent reactions (Calvin cycle): These reactions occur in the stroma of the chloroplasts and do not require sunlight directly. Carbon dioxide from the atmosphere is used to produce glucose, which can be stored or used as an energy source by the plant.

As a result of photosynthesis, oxygen is continuously released into the atmosphere. However, the concentration of oxygen is generally higher in the ground compared to the air above it due to several factors:

1. Diffusion: Oxygen molecules are constantly moving and can diffuse through porous materials, including soil and rocks. This diffusion allows oxygen to penetrate the ground and accumulate in the soil. 2. Microbial respiration: Microorganisms present in the soil consume oxygen during their metabolic processes. However, the rate at which oxygen is consumed by microbial respiration is generally lower than the rate at which oxygen is replenished through photosynthesis, leading to a net accumulation of oxygen in the ground. 3. Plant respiration: While plants release oxygen during photosynthesis, they also consume oxygen during respiration. Plant roots, which are in direct contact with the soil, take up oxygen from the ground for their metabolic needs. However, the overall oxygen production through photosynthesis is typically higher than the oxygen consumption through respiration, resulting in a net accumulation of oxygen in the ground.

In summary, the higher concentration of oxygen in the ground compared to the air above it is primarily due to the continuous release of oxygen through photosynthesis and the slower rate of oxygen consumption by microorganisms and plant roots in the soil.