Answer:
Hydrogen
Explanation:
Hydrogen is the only nonmetal in group 1, therefore it is the only element in group 1 that forms a covalent bond.
Answer:
Classification of organisms is done while considering many factors such as:
Cell type- whether the organism is prokaryotic or eukaryotic
Cell structure- This includes both the presence and composition of the cell wall
Body type- whether the organism is multicellular or unicellular
Mode of nutrition- the method through which the organism achieves its nutritional requirement, by consuming other organisms (heterotroph) or making its own food (autotroph)
Of the following given choices;
A) thalamus. B) amygdala. C) hippocampus. D) hypothalamus
The answer is; D
The region has chemicals that work antagonistically to regulate satiety and appetite. CART chemicals stimulate increased metabolism, increased insulin production and reduced appetite. On the other hand, NPY chemical reduces metabolism and increase appetite.
A mutation is a genetic error in the creation of DNA. My science teacher compared it to a copier that made a mistake; the DNA is copied from others, but the "copier" messed up, making part of a helix different. Mutations can be genotypes or phenotypes.
