Answer is the first option, Fossil fuels release carbon dioxid, a greenhouse gas, as they burn.
This is the correct answer
Answer:
Allele
Explanation:
A gene is a stretch of DNA that code for a specific protein. A gene can exist as two or more alternative forms. These alternative forms of a gene are called as alleles. The alleles are responsible for presence of variants of a particular genetic trait.
For example: The gene for plant height has two possible forms, i.e. two alleles. These are symbolized as "T" and "t". The allele "T" impart tallness while allele "t" imparts dwarfism to the plants.
Answer:
Explanation:
Diffusion is a substance movement from a region of high concentration to low concentration