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TiliK225 [7]
2 years ago
7

Create a food chain that shows the energy transfer from the sun to a grizzly bear. Include four transitions (arrows) in your foo

d chain.
Chemistry
2 answers:
lidiya [134]2 years ago
6 0

Sun⇒ Phytoplankton (Producer)⇒ Zooplankton (Primary consumer)⇒ Fish (Secondary consumer)⇒ Bear (Tertiary consumer).

  • A food chain is a sequence of transfer of food and energy when one organism is consumed by another organism.
  • A food chain is always unidirectional sequence.
  • In the provided food chain the sun is the source of energy required for the preparation of food by the phytoplankton that is an aquatic autotroph which will prepare its food by the process of photosynthesis.
  • The phytoplankton being producer of biomass is consumed by the zooplankton that is the primary consumer than the zooplankton will be consumed by the fish that is the secondary consumer and carnivore by origin and finally the fish will be consumed by the bear that is also carnivore and is tertiary consumer.

Learn more about food chain:

brainly.com/question/16543685

Aneli [31]2 years ago
6 0
1. The sun - plant - caterpillar - fish - bears
(Hope this helps :3)
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It takes 53.0 J to raise the temperature of an 11.0 g piece of unknown metal from 13.0∘C to 24.2 ∘
jasenka [17]
You need to use q = mc(delta t) 
<span>Solve for c: </span>

<span>c = q / m(delta t) </span>

<span>q = 55.o J </span>
<span>m = 11.0 g </span>
<span>delta t = 24.5 - 13.0 = 11.5 deg C </span>

<span>c = 55 J / 11.0 g)(11.5 C) </span>
<span>c = 0.435 J/ g C</span>
7 0
3 years ago
Place the steps of the action potential in order.
Ierofanga [76]

Answer:

-Reversal of the resting potential due to influx of sodium ions

-Mechanism that restores the resting membrane voltage and intracellular ionic concentrations

-Period during which potassium ions are diffusing out of the neuron because of a change in membrane permeability

-A brief reversal of membrane potential that travels along the axon

Explanation:

An action potential is a situation where the membrane potential is briefly reversed from -70mV to +30 mV

There are three steps of the moving action potential, including;

1) The depolarization step, where the membrane resting potential is reversed by the rush of sodium ions into a neuron

2) The repolarization, due to the closing of the voltage-gated sodium channels and the opening of the potassium channels, which is a mechanism that restores the membrane's resting voltage and the ionic concentration in the cell

3) Hyperpolarization, where due to some open potassium channels, there is an increased potassium permeability, and excessive efflux of potassium ions take place, which results in a dip in the membrane potential

4) The above three phases describe the phase of the action potential which is the brief reversal of membrane potential that travels along the axon

7 0
3 years ago
For most solids at room temperature, the specific heat is determined by oscillations of the atom cores in the lattice (each osci
Cloud [144]

Answer:

The specific heat of copper is  C= 392 J/kg\cdot ^o K

Explanation:

From the question we are told that

The amount of energy contributed by each oscillating lattice site  is  E =3 kT

       The atomic mass of copper  is  M =  63.6 g/mol

        The atomic mass of aluminum is  m_a = 27.0g/mol

        The specific heat of aluminum is  c_a = 900 J/kg-K

 The objective of this solution is to obtain the specific heat of copper

       Now specific heat can be  defined as the heat required to raise the temperature of  1 kg of a substance by  1 ^o K

  The general equation for specific heat is  

                    C = \frac{dU}{dT}

Where dT is the change in temperature

             dU is the change in internal energy

The internal energy is mathematically evaluated as

                       U = 3nk_BT

      Where  k_B is the Boltzmann constant with a value of 1.38*10^{-23} kg \cdot m^2 /s^2 \cdot ^o K

                    T is the room temperature

                      n is the number of atoms in a substance

Generally number of  atoms in mass of an element can be obtained using the mathematical operation

                      n = \frac{m}{M}  * N_A

Where N_A is the Avogadro's number with a constant value of  6.022*10^{23} /  mol

          M is the atomic mass of the element

           m actual mass of the element

  So the number of atoms in 1 kg of copper is evaluated as  

             m = 1 kg = 1 kg *  \frac{10000 g}{1kg }  = 1000g

The number of atom is  

                       n = \frac{1000}{63.6} * (6.0*0^{23})

                          = 9.46*10^{24} \ atoms

Now substituting the equation for internal energy into the equation for specific heat

          C = \frac{d}{dT} (3 n k_B T)

              =3nk_B

Substituting values

         C = 3 (9.46*10^{24} )(1.38 *10^{-23})

            C= 392 J/kg\cdot ^o K

5 0
3 years ago
How many MOLES are in 35.47g of H2SO4?
steposvetlana [31]

Answer:

C

Explanation:

Divide 35.47 by the molar mass

3 0
3 years ago
These goats are eating grass on a sunny day. What is happening to the carbon in the air around the living things on the mountain
polet [3.4K]

Answer:

both

Explanation:

Carbon in the air around the living thing is moving in and out of its lungs. The movement is occurring at the same time. This is one of the most important gaseous exchange important to life.

  • The goats takes in oxygen gas from the surrounding and releases carbon dioxide in the process.
  • But, air is actually drawn in by the goat which is a mixture of several gases.
  • Air contains carbon dioxide which is a rich source of carbon
  • With the carbon dioxide from respiratory processes, the goat ejects and breathes out this waste carbon matter.
  • Therefore, the gaseous exchange in a goat involves the movement of carbon in and out of the air.
8 0
4 years ago
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