Which of the following is the best example of physical weathering? A.
plant roots splitting rock
B.
iron in igneous rock rusting
C.
students tearing paper
D.
acid rain breaking down rock

Asap timed! 1. ice core samples from glaciers ice caps contain bubbles of ancient atmosphere that are in layers based on age. what questions are scientists most interested in? a. how the amount of water vapor needed to make the ice has changed b. how the amount of ozone has changed over time.c. how the amount of ice in each layer has changed over time d. how the amount of carbon dioxide has changed over time 2. what produces milankovich cycles ? a. sunspots ams solar flare on the suns surface b. changes in the earths orbit c. gravitational changes bases on the position of the sun and the moond. cycles of vegetation that result in desert and rainforest conditions

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

Sequence how oxygen accumulated in the atmosphere and the effect it had on life by completing the flowchart