Use the diagram below to answer the question.

On the Atlantic Ocean floor, there is a long ridge of underwater mountains caused by volcanic eruptions. New volcanoes keep erupting, and new mountains keep forming. Why is this happening?
A. Crustal plates are colliding
B. Earth's center is becoming hotter
C. The ocean floor is forming
D. A new continent is forming

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates