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kkurt [141]
2 years ago
13

If each of these food chains start with 10,000 grams of phytoplankton, how much reaches the highest trophic level in each food c

hain
Biology
1 answer:
s344n2d4d5 [400]2 years ago
3 0

Energy is transferred from one trophic level in a food chain to another. However, not all the energy available at a trophic level is transferred to the next.

Only about 10% of the energy in the lower trophic level gets to the immediate higher trophic level and the rest is lost as metabolic heat.

Thus, if a food chain starts with 10,000 grams of phytoplankton, the quantity that will get to the highest trophic level would depend on the number of intermediate trophic levels in between the lowest and the highest.

For every step the energy is transferred up the trophic level in the food chain, 90% of it is lost.

More on energy transfer in trophic levels can be found here: brainly.com/question/20135715

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Construct a scientific explanation based on evidence for how environmental and genetic factors influence the growth of organisms
lianna [129]
Environmental and genetic factors can influence the growth of many organisms on earth such as plants, animals, and even fish. When the climate changes, many animals/organisms adapt by adaptation and evolution. Every organism can evolve in order to stay alive in this race of competition for survival. This is a natural accordance that happens every day in our world. Thus making organisms stay alive for longer periods of time.
5 0
3 years ago
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Which of the following most accurately describes the process that must occur when working with research animals covered by U.S.
kondor19780726 [428]

Answer:

The process which must occur when intending to work with research animals that are covered by the U.S federal regulations is ethical review and approval

Explanation:

Some animals had been threatened of extinction due to inconsiderate usage and killings due to either commercial, food, or research purpose. The U.S government, therefore, to prevent the extinction of such animals, formulated a law to restrict the engagement of these animals, even in research if the research will involve the slaughtering, injuring, or alter the physiological functions of the subject animals. Therefore, there has been needing to undergo a compulsory ethical review process when planning to undertake research. This process will objectively review the aims and objectives of the intended research, the methodology involved in achieving the aim, as stated in the research proposal. The importance of this review is to determine if the research will have deleterious effects on the animals, both spontaneously and in the future.

3 0
3 years ago
Correctly label the anatomical features of the muscle filament.
irina [24]

The labeled anatomical features of the muscle filament are attached as an image.

Muscle filament or Myofilaments are the two protein filaments of myofibrils in muscle cells. The two proteins are myosin and actin and are the contractile proteins involved in muscle contraction.

  • It has two filaments, a thick one made up mostly of myosin, and a thin one composed mostly of actin
  • Actin is a filament made up of protein that contributes to the contractile property of muscle. It is found in two forms, G-actin (monomeric globular actin) and F-actin (polymeric fibrous actin)
  • Tropomyosins are contractile proteins that regulate contraction in both muscle and non-muscle cells with help of myosin and actin filaments. It is present in animal cells.
  • A troponin complex is a group of three proteins, troponin T, troponin I, and troponin C, subunits located on the thin filament of the contractile apparatus.

Thus, the correct labeled anatomical features of the muscle filament is attached as an image.

Learn more about Actin and myosin:

brainly.com/question/13989896

8 0
2 years ago
If you were Greta, and were concerned about biodiversity and soil health, how would you manage your farm
Alla [95]

Answer:

If I am concerned about biodiversity, I would plant Genetically Modified (GM) crops given the reason that they have an advantage above any other species of crop.

Explanation:

Genetically modified crops (GM crops) are plants utilized in agribusiness, the DNA of which has been changed utilizing hereditary designing strategies. Plant genomes can be designed by actual strategies or by utilization of Agro-bacterium for the conveyance of arrangements facilitated in T-DNA parallel vectors.

Much of the time, the point is to acquaint another attribute with the plant which doesn't happen normally in the species. Models in food crops incorporate protection from specific irritations, infections, natural conditions, decrease of waste, protection from substance medicines (for example protection from a herbicide), or improving the supplement profile of the harvest. Models in non-food crops incorporate creation of drug specialists, bio-energizes, and other mechanically helpful merchandise, just as for bio-remediation.

3 0
3 years ago
TOPIC:Water Erosion
timurjin [86]

Answer:

1. This experiment was to find how mass and speed effect KE. This is important because if you were in a situation where you needed something to go higher, you would know to add more or less of mass/speed.  

To test mass, we filled the bean bag with a certain amount of water, then dropped it. After, you recorded how high it made the bean bag go. The same with speed, but same amount in the bottle, just dropped from different heights.  

My hypothesis is when you have more mass, the KE will be greater. This is also the same with speed, if it is dropped from a higher place, the bean bag will launch farther than the last time.  

2. Data I collected from the lab was like my hypothesis explained. When the height of the bottle increased, it made the bean bag go higher than the last. And I tested 4 different masses, 0.125 kg, 0.250kg, 0.375kg and 0.500kg. Each time the bean bag went higher on a larger mass.  

A lot of times on the speed test, the bean bag would go higher than the bottle drop point, but not every time. Also, when it was dropped from the same height each time, some results varied quite a bit, like when it was dropped from 1.28 the results were 1.14 then 1.30 1.30. Mass on the other hand was all in the same number range, only once the numbers were a bit off from each other.  

3.  Some formulas I used were KE= ½ mv^2 and Ht v^2/2g. The first was to calculate the kinetic energy of an object, m=mass v=speed. Second was for finding out what height I needed to drop something to reach a certain speed, Ht=Height and g= Gravitational Acceleration of 9.8 m/s^2.  

I used these to figure out tables that showed relationships between different things like mass and KE or speed and height. The whole time I was doing the lab, my data was going up, when there was more mass/speed there were higher values in the table.  

This means that my hypothesis at the beginning was correct, more of m/s means KE will increase proportionally because they are all linear. I found it surprising when the bean bag height went over the water bottle drop mark.  

4.     To conclude, my hypothesis matched my data. The data values went up when more mass or speed was added. This means if I were in a situation where I needed more kinetic energy for something, I would know to increase mass or the speed of the object giving it energy.  

The reason that this hypothesis is correct is when you have more mass, you have more energy. So, when you drop let's say a baseball, it isn’t that heavy so it would only launch the bean bag so far. But a bowling ball is very heavy and has lots of energy when falling because of that, it would make the bean bag go very high.  

To make this experiment better, I would use a smoother material for the lever so energy wouldn’t be lost by friction from wood rubbing together. Also, maybe a scanner or video camera to more accurately record how far the bean bag went. All of these would help the lab get more precise results, maybe they could be used in a future lab.

-sry its alot but i hope it helps!  :)

Explanation:

#need any questions answered within secs/mins let me know and  got you

#brainliest

:)  <3

6 0
3 years ago
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