Question

hierarchy for humans

• domain - eukarya - cells have a nucleus
• kingdom - animalia - no cell wall. heterotrophic and mobile
• phylum - chordata - posse a notochord, post anal tail and dorsal hollow nerve chord
• class - mammalia - posse mammary glands, hair, and three inner ear bones
• order - primates - opposable thumb
• family - hominidae - large brain case and lacking tail
• genus - homo - bipedal
• specific epithet - sapien

scientific name is homo sapien
value: 7
how many species have been identified on earth?

• a. 1500 thousand

b. 5000 thousand
c. 1.5 million
d. 2.5 billion
e. 4.5 billion
f. 1 trillion

Explanation:

According to scientific research and estimates, approximately 1.5 million species have been identified on Earth. This is a well - known approximate figure in biological studies regarding species identification.

Answer:

C. 1.5 million