It should be C. direct contact.
Animal cells cannot produce food is the true answer.
Answer:
Bacteria.
Explanation:
When a plant or animal dies, decomposers like fungi and bacteria turn the nitrogen back into ammonium so it can reenter the nitrogen cycle. Denitrification - Extra nitrogen in the soil gets put back out into the air.
returns freshwater to the earth
occurs after condensation
is roughly equal to the amount of evaporation
Explanation:
Precipitation returns fresh water to the earth, occurs after condensation and is roughly equal to the amount of evaporation.
The process of precipitation is a key component of the hydrologic cycle.
- In the hydrologic cycle, precipitation follows condensation of water vapor in the atmosphere.
- Precipitation often takes the form of rainfall and snow.
- It is any product of condensation of water in the atmosphere that falls back under the influence of gravity.
- In the hydrologic cycle, water leaves the surface of the earth in form of vapor as result of evaporation.
- Most times , the amount of evaporation is roughly equal to that of precipitation.
learn more:
Biogeochemical cycle brainly.com/question/3509510
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The hemoglobin holoenzyme (active enzyme) is a complex of an iron ion and 4 subunits- 2 hemoglobin alpha and two hemoglobin beta. People with sickle cell disease have mutated beta hemoglobins. The mutation is a single nucleotide exchange, that changes the 6th amino acid of protein primary struture - a Glutamic acid into Valine. This one alteration changes the tree dimentional structure of hemoglobin beta so, that it forms lond fibres that disrupt the normal circular form of the red blood cells.
