Many nonchordates have tails. Which feature differentiates a chordate's tail from that of a nonchordate?

A.

Chordates have postanal tails.

B. Chordates have longer tails than nonchordates.

C. Chordate tails are ventral in origin.

Using traditional classification methods, which of the following sets of organisms would be the most difficult to classify?

Which organism appeared on Earth first? gastropods horn corals brachiopods crinoids

What forms when one oceanic plate is forced beneath another plate? A. an ocean basin B. ocean ridges C. a subduction zone D. a rift valley

Like I p plklel KB ko I Poapappop IPO. M Ok

Explain the mechanism by which air masses rise and fall and how it contributes to stratospheric ozone deterioration

Unfinished proteins transported from the er are modified in the cell's

What would be the most likely explanation pf increased Earth tides?

A human gene has 5 alleles. how many heterozygous genotypes are possible? 5 correct answer 10 15 20 25

In the traditional phylogeny (a), the phylum platyhelminthes is depicted as a sister taxon to the rest of the protostome phyla and as having diverged earlier from the lineage that led to the rest of the protostomes.

Which of the following statements is false? Which of the following statements is false? All organisms require the same elements in the same quantities. Carbon, hydrogen, oxygen, and nitrogen are the most abundant elements of living matter.