While a constant supply of freshwater happens by itself in natural streams, an aquarium is by definition, a closed system. So here, man has to help out in order to provide new..
Answer:
I'm sorry. I wanted to try and answer the question but I can't because it isn't clear.
Answer:
It would be b. 1 TT: 2Tt: 1 tt. Because crossing two heterozygous parents means the genotypes for them are Tt and Tt. Which means that there is only one way to get TT or tt and 2 ways to get Tt
Explanation:
Answer:
The energy comes from electrons produced by oxidation of biological molecules.
Explanation: In photosynthesis, the energy comes from the light of the sun.
Hope this helped! :)
