Answer:
Tropical- rain forests are considered to be the lungs of the Earth due to their role in the carbon-oxygen cycle. The rain forests take in carbon dioxide and release oxygen into the Earth hence, providing the Earth with an abundance of oxygen. The working of these tropical rain forests is just like the working of our lungs, lungs remove carbon dioxide from the body and supply oxygen. Tropical rain forests carbon dioxide for the Earth and supplies it with oxygen.
The options aren’t there but here’s a few facts.
Genotypes are the alleles present in order to form a phenotype. A phenotype is the traits present based on the genotype or genetic code. For example, if you have two dominant alleles (which is a genotype)... let’s say C (as in the dominant allele stands for curly hair) Then if the genotype was CC or Cc the phenotype would be curly hair. If the genotype was cc than the phenotype would be straight hair.
active transport in small intestines and passive transport in blood cells
It would be glycogen, after reading the article from the science learning hub.