In general, while highly variable, the fossil record suggests a long-term trend of _________ taxonomic diversity and __________ extinction rates.
Fill in the blank(s) with the appropriate word(s).
Answer: Increasing, decreasing
You might also like to view...
Which hold the least carbon?
a. soils c. seawater b. the air d. rocks
Within a genus that normally produces large numbers of offspring, one particular species evolves maternal care behavior. What do you predict will happen to the survivorship curve?
A. No change is likely. B. It may change from type I to type III. C. It may change from type III to type I. D. It may change from type I to type II.
In multicellular species, fungal spores germinate and give rise to filaments called __________. Fill in the blank(s) with the appropriate word(s)
The ___________ controls the amount of food that moves back up the esophagus.
A) duodenum B) cardiac sphincter C) gastric mucosa D) pyloric sphincter