Integumentary system
EXPLANATION: Defends the body after it has been invaded by a microscopic organism. Integumentary system. Protects the internal tissues of the body from potential harm.
I think it's the first answer
Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits. He recognized the mathematical patterns of inheritance from one generation to the next. Mendel's Laws of Heredity are usually stated as:
1) The Law of Segregation: Each inherited trait is defined by a gene pair. Parental genes are randomly separated to the sex cells so that sex cells contain only one gene of the pair. Offspring therefore inherit one genetic allele from each parent when sex cells unite in fertilization.
2) The Law of Independent Assortment: Genes for different traits are sorted separately from one another so that the inheritance of one trait is not dependent on the inheritance of another.
3) The Law of Dominance: An organism with alternate forms of a gene will express the form that is dominant.
SOURCE: http://www.dnaftb.org/1/bio.html
Answer:
C
Explanation:
It moves across the cell membrane via simple diffusion, a process that requires no energy input and is driven by the difference in concentration levels on each side of the cell membrane.
The atomic structure of an atom that is stable and unreactive would first be that its valence shell is full, it is a happy atom. They do this by losing, gaining or sharing their electrons. This makes them stable. It is also a Noble gas, noble gases are unreactive!
Nitrogen fixation is the compound
