Answer:
Semi-permeable membrane
Explanation:
In semi-permeable membranes, only some substances can pass through. Sometimes, some can also pass through the channel protein molecules or transport proteins on the cell membrane.
Answer:
D
Explanation:
Aseual reproduction is a type of reproduction in which new organisms are reproduce from single parent without production of gametes. But in D their is fusion of gametes (egg and sperm) therefore it explains to us that it is not an aseual reproduction.
The acid is H2Se, the base is H2O, the conjugate acid is H3O+, the conjugate base is SeH–.
The reaction equation is as follows;
H2Se + H2O → SeH– + H3O+
The acid is the specie that donates a proton while the base is the specie that <em>accepts</em> the proton.
The specie formed from the acid after it donates a proton is called the conjugate base while the specie formed from the base after accepting a proton from the acid is called the conjugate acid.
From the reaction equation, we can see that the acid is H2Se, the base is H2O. The conjugate acid is H3O+ while the conjugate base is SeH– .
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The wave period is the amount of time it takes a wave to
pass a point. Wave frequency is what you
call the number of waves that pass in a certain point per second. If you
increase the wave length of any wave, you decrease the wave frequency (the
number of waves that pass in a certain point per second).
Nearly all of the energy used by living things on earth to survive originally came from the sun .Producers plant produce their own food from sun,water,air (Carson dioxide) and soil.