Ask question

Ask question

All categories

4 years ago

14

Algae will not reproduce if the sunlight falls below a certain level. Which name is given to the sunlight in this case? A. contr

olling factor B. limiting factor C. ecosystem factor D. reproductive factor

2 answers:

lyudmila [28]4 years ago

8 0

Answer:

B.

Explanation:

sunlight is the limiting factor

lesya [120]4 years ago

5 0

Answer:

Its C).

Explanation:

You might be interested in

Katyanochek1 [597]

Answer:

tidal power

Tidal power or tidal energy is harnessed by converting energy from tides into useful forms of power, mainly electricity using various methods. Although not yet widely used, tidal energy has the potential for future electricity generation. Tides are more predictable than the wind and the sun.

Ocean thermal energy conservation

Ocean Thermal Energy Conversion (OTEC) is a marine renewable energy technology that harnesses the solar energy absorbed by the oceans to generate electric power. ... OTEC uses the ocean's warm surface water with a temperature of around 25°C (77°F) to vaporize a working fluid, which has a low-boiling point, such as ammonia.

hydrogen fuel

Hydrogen fuel cells produce electricity by combining hydrogen and oxygen atoms. The hydrogen reacts with oxygen across an electrochemical cell similar to that of a battery to produce electricity, water, and small amounts of heat. Many different types of fuel cells are available for a wide range of applications

fuel cell

Fuel cells work like batteries, but they do not run down or need recharging. They produce electricity and heat as long as fuel is supplied. A fuel cell consists of two electrodes—a negative electrode (or anode) and a positive electrode (or cathode)—sandwiched around an electrolyte.

Energy Efficiency

Energy efficiency simply means using less energy to perform the same task – that is, eliminating energy waste. Energy efficiency brings a variety of benefits: reducing greenhouse gas emissions, reducing demand for energy imports, and lowering our costs on a household and economy-wide level.

Hybrids

a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction.

Bovid Hybrids. Zubron - hybrid of domestic cattle and european bison

cogeneration

Cogeneration—also known as combined heat and power, distributed generation, or recycled energy—is the simultaneous production of two or more forms of energy from a single fuel source. Cogeneration power plants often operate at 50 to 70 percent higher efficiency rates than single-generation facilities

Explanation:

7 0

3 years ago

Mendel investigated stem length, or height, in pea plants. What if he had investigated human height instead? Why would his resul

Whitepunk [10]

The phenomena of polygenic inheritance would have become a grievous fault to his investigation, if he had investigated human height instead of stem length of pea plants.

Explanation:

The polygenic or polygenetic inheritance is the inheritance where the trait of a particular allele is passed on to the next generation with many genes involved in order to show the genotype and phenotype of the allele present on the same chromosome.

The stem length or plant height depends on the single factor of allelic gene inheritance and expression in phenotype, making it simpler to trace down the division of meiosis and control the experiment as needed. Considering human height for a chance, may lead to uncontrolled condition of having next generation study as well as the time required to be long. Other factor was that the height is dependent not only on the height gene expression but is controlled by nutrition and environmental factors too.

4 0

4 years ago

What surrounds all cells?

Alecsey [184]

Answer:

All cells are surrounded by a cell membrane. The cell membrane is semipermeable, allowing some substances to pass into the cell and blocking others.

Explanation:

6 0

4 years ago

1. Although their concentration in the atmosphere is lower than carbon dioxide, ____________________ absorb Earth's outgoing rad

cestrela7 [59]

Answer:

1. Trace gases 2. Climate feedback mechanisms 3. Positive feedback mechanisms 4. Aerosols 5. Negative Feedback Mechanisms 6. Positive feedback mechanism

Explanation:

Using the knowledge of global warming as a result of climate change, we can provide the following answers to fill in the gap:

1. Trace gases

Greenhouse gases provides a natural effect known as greenhouse effects. This effect is achieved when greenhouse gases trap and absorb infrared radiation, in form of heat, thereby slowing down the loss of he into space. This effect ensures the earth remains habitable as the temperature of the earth would drop causing freezing of the earth. Life would almost not exist in the absence of this phenomenon caused by greenhouse gases. Carbon dioxide accounts for the highest percentage by volume of the total greenhouse gases found in the atmosphere. Trace gases such as argon are found in minute quantities in the atmosphere. Hey also have the ability to absorb infrared rays.

2. Climate feedback mechanisms

Climate feedback mechanism is a kind of continuous cycle that describes how the system responds to the changes it is being impacted on. The change can either produce an increase or decrease in the warming effect. There are basically 2 types of feedback mechanism: Positive and Negative feedback mechanism. A positive feedback mechanism involves changes that reinforce the increase of the temperature of the system, while negative feedback mechanisms involves processes that reduce the effect of warming, causing a drop in temperature of the system.

3. Positive feedback mechanisms

Effects that involve processes that helps in pushing the temperature of the climate system up, thereby producing additional warming effect on the initial warming trend of the system are said to be identified as Positive feedback mechanisms. Examples of such effects is melting of ice, especially as more pronounced in polar regions.

4. Aerosols

Aerosols can be in form of fine solid particles or liquid droplets suspended in the air. Examples of aerosols include dust, fog, smoke or air pollutants. They have the ability to scatter solar radiation and change the reflectivity of the earth. These effects created by aerosols have a cooling effect on the climate system, as a against the effect produced by greenhouse gases. The effects caused by aerosols are examples of negative feedback mechanisms.

5. Negative Feedback Mechanisms

An example of such effects is the effect produced by aerosols. Such effect cools the system which is opposite to the warming trend of the system.

6. Positive feedback mechanism

Decrease in surface reflectivity, and increase in surface solar energy absorption as a result of reduced sea ice would further reinforce the warming trend of the system, such change a positive feedback mechanism.

6 0

4 years ago

What does it mean to say that an allele is lost?

madreJ [45]

Answer:

It means it disapear from the population during a certain time period

Explanation:

Lost allele often refers to fixed allele and it is a phenomenon when only one allele of a gene is present in the population. This event occurs usually as a consequence of a disaster, for example forest fire. After the disaster, only certain individuals survive with the fewer alleles that the initial population. Other alleles are lost.

3 0

3 years ago