Why is biosynthesis unlikely to occur today as it did in Earth's youth?
A) Living organisms have altered oceanic and atmospheric conditions
B) There is less available oxygen in the atmosphere
C) Ozone is less protective from the sun's influence
D) All of these choices are true
A
You might also like to view...
Moldova, after it became an autonomous republic sought ethnic reunification with
A) Bulgaria. B) Hungary. C) Austria. D) Romania. E) Slovenia.
Look at the "S" shapes in the middle-lower half of the photo below. Which of the following is a true statement based on what we know about streams? (Select all that apply.)
©imageBROKER / Alamy Stock PhotoA) Erosion is higher at outside of bendsB) Sediment is probably fine sand and siltC) Stream is flowing from bottom to topD) Erosion is lower at outside of bendsE) Stream is flowing from top to bottomF) Sediment is probably gravel
What will be an ideal response?
An organism's ________ for many environmental factors determines where it can live
A) adaptations B) survivorship C) carrying capacity D) fitness E) range of tolerance
True or False: Most active mountain belts are located near plate boundaries
Indicate whether this statement is true or false.