Elephants, who are important grazers, are instrumental in transforming woodlands into grasslands. This has a tremendous impact on other species that depend on the grass for their survival. The significance of the elephant in this example is B. keystone species.
Answer:
the model failed to account for the changes in the appearance of the inferior plants.
Explanation:
The model was a geocentric model that was based on the refraction. Though the theory was sound it did not provide a full truth about the orientation of planets in space. Also, the theory lacked compelling evidence of the heliocentric hypotheses. in addition, the model was rejected based on the fact that earth rotation cannot be immediately felt. In addition, earth does not have a perfect circular path around the sun. Lastly, the geocentric model makes much sense.
Answer:
Cuando hablamos de criterios sostenibles nos referimos a aquellas pautas que evitan o, en su defecto, minimizan el impacto ambiental, económico y social producido por la acción antrópica (en adelante Acción) que se esté planificando, desarrollando o explotando.
Explanation:
Answer:
Stratosphere
(I think it's been a while)
Answer:
Three proteins directly contribute to the proton gradient by moving protons across the membrane
Explanation:
The Electron transport chain is a group of proteins and molecules incrusted in the internal mitochondrial membrane and organized into four complexes, I, II, III, and IV. These complexes contain the electron transporters and the enzymes necessary to catalyze the electron transference from one complex to the other. Complex I contains the flavine mononucleotide -FMN- that receives electrons from the NADH. The coenzyme Q, located in the lipidic interior of the membrane, conducts electrons from complex I and II to complex III. The complex III contains cytochrome b, from where electrons go to cytochrome c, which is a peripheric membrane protein. Electrons travel from cytochrome c to cytochromes a and a3, located in the complex IV. Finally, they go back to the matrix, where they combine to H+ ions and oxygen, to form the water molecule. As electrons are transported through the chain, protons are bombed through three proteinic complexes from the matrix to the intermembrane space. These are complexes I, III and IV.
