A persons blood group is an inherited trait. In blood groups, there is one allele, represented by the letter A. There is another allele, represented by the letter B. Some people inherit both alleles. They have a blood group known as AB. What does the inheritance of blood group AB demonstrate?
A- dominance
B- recessive
C- codominance
D- incomplete dominance

i am positive it is c. condensing but i may be wrong

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question