The answer is letter d. it has only 2 electrons in its first shell and 4 in the second shell. Basing from the electronic configuration of the carbon atom, the "s" orbital of carbon atom is completely filled leaving now the "p" orbitals partially filled. Thus in this case, carbon atom has four (4) valence electrons.
Answer:
the F1 generation
Explanation:
If two strains of true-breeding plants that have different alleles for a certain character are crossed, their progeny are called the F1 generation
Answer:
The correct answer will be option- Australopithecus.
Explanation:
<em>Australopithecus</em> is an extinct genus of a large group of animals called primates. This genus is closely related to humans which may or may not be ancestors of <em>Homo sapiens</em>.
Australopithecus exhibits traits of both ape and human-like which is distinguished by the small size of the brain, smaller canine teeth but large molar and premolar teeth, broad dish-shaped face, sagittal crest, large molar teeth, flared zygomatic arches and sloping forehead.
Thus, option- Australopithecus is the correct answer.
The four postulates of the natural selection include.
1. individuals possessing particular traits are have higher likelihood of surviving and reproducing.
2. different individuals in a population have different traits
3.reproductive and survival rate vary with individuals in a given population.
4. some trait differences are inheritable.
The answer is C, because if something contagious we’re to threaten the population of the species then not having any variant means they’re all the same and it would kill them all and cause them to go extinct
