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Juliette [100K]
4 years ago
11

What did matthias schleiden contribute to the cell theory

Biology
1 answer:
icang [17]4 years ago
5 0

Answer:

He was the firs who claimed that organism is composed of cells.

Explanation:

Together with Theodor Schwann and Rudolf Virchow, a German botanist Matthias Schleiden was a cofounder of cell theory. He studied plant structure under the microscope and there he discovered that the basic units of plant organism are cells. He was also involved in the findings about the cell nucleus and the cell division process.

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Why phytoplankton biomass decreases between June and July​
timurjin [86]

Answer:

The cause of phytoplankton blooms has traditionally been attributed to seasonal changes in ‘bottom-up’ environmental factors controlling phytoplankton division rates, such as nutrients and light 3,4,5,6,7. However, seasonal changes in phytoplankton biomass (P) represented by the biomass-specific net rate of change (r) always reflect the interplay between two dominant terms, the phytoplankton division rate (μ) and the sum of all loss (l) rates (e.g., grazing, viruses, sinking):

Explanation:

The photosynthetic production of organic carbon by marine phytoplankton plays a key role in regulating atmospheric carbon dioxide (CO2) levels, such that without this biological uptake it is estimated that present day atmospheric CO2 concentrations would be 200 ppm (50%) higher1. Phytoplankton blooms in the temperate and polar oceans play a disproportionally large role in ocean CO2 uptake, as well as being critical ecological events to which the migration patterns of marine animals, ranging from zooplankton to whales, have evolved2. The cause of phytoplankton blooms has traditionally been attributed to seasonal changes in ‘bottom-up’ environmental factors controlling phytoplankton division rates, such as nutrients and light3,4,5,6,7. However, seasonal changes in phytoplankton biomass (P) represented by the biomass-specific net rate of change (r) always reflect the interplay between two dominant terms, the phytoplankton division rate (μ) and the sum of all loss (l) rates (e.g., grazing, viruses, sinking):

r=1PdPdt=μ−

Hope this helps

3 0
2 years ago
What is the process by which oxygen and carbon dioxide are exchanged between the lungs and the atmosphere?
Archy [21]
The process by which oxygen and carbon dioxide are exchanged between the lungs and the atmosphere is known as respiration.
3 0
4 years ago
Please answer.
mars1129 [50]

Answer:

The correct answer is D. an unbalanced force.

Explanation:

If an unbalanced force were applied to the glass of water (for example, someone pushing the glass, lifting it up, etc.), this would cause it to move.  However, a balanced force (if two people were to simultaneously pull the glass in opposite directions with the same amount of force) would not cause the glass to move.  Gravitational force acts on all objects; the force due to gravity is already acting on the cup at rest and will not cause it to undergo motion.  Friction is also already acting on the cup in the form of static friction, making it harder for someone to move the cup, so frictional force will not cause the cup to move either.  Therefore, the correct answer is D. an unbalanced force.

Hope this helps!

6 0
3 years ago
A person receives an o allele and a alleles for blood type. what is the individual's blood type
laila [671]
Blood type A.... because A alleles are dominant whereas O alleles are recessive. Hence, A alleles will express themselves more causing the blood type of the individual to be blood type A.
4 0
3 years ago
Read 2 more answers
The United States space program:
ruslelena [56]

Answer:

NASA

Explanation:

5 0
3 years ago
Read 2 more answers
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