Answer:
Scientists have determined that humans are disrupting the nitrogen cycle by altering the amount of nitrogen that is stored in the biosphere. The chief culprit is fossil fuel combustion, which releases nitric oxides into the air that combine with other elements to form smog and acid rain.
Explanation:
No they don’t have mitochondria
The earth orbits the sun. Due to this fact, the northern and the southern hemisphere are tipped toward the sun at different times. Different climate zones fall under the southern and the northern hemisphere. There are many factors which affect the climate of a place and the most important one out of these factors is LATITUDE. Latitude refers to how far or close an area is to the north or the south of the equator. The latitude of a place determines the length and the intensity of sunlight that that place will experience. Thus, a place that is closer to the equator will continuously receive a lot of direct sunlight and such a place will have a warm climate.
Answer: It is called codominance
Explanation: Every trait is controlled by at least a pair of gene. Genes have different forms known as alleles. Codominance is a heterozygous condition in which two alleles at a gene locus are fully and equally expressed in the phenotype of the organism. The alleles that express themselves equally are called codominant alleles. Neither of the alleles is fully dominant over the other in codominance.
Example is in the ABO blood group in which A is dominant and B is also dominant and AB is codominant while O is recessive.