What kind of environment would have had to existed in the past for an area to have coal today? A. Any environment where a large number of plants and animals died.
B. A swamp with many generation of plants that died and couldn't decompose naturally.
C. A sea where many plants and animals died and couldn't decompose.
D. A desert environment where no living things ever existed.
Clear answer

Populations of blue-winged warblers, a type of bird, migrate south in the winter and return to canadian breeding grounds in the spring. as global temperatures have increased due to climate change, spring has started arriving in the warbler's breeding grounds earlier in the year, before the warblers return. warblers now arrive at their breeding grounds too late to select ideal nesting sites and to feed on important early-spring food sources how are populations of blue-winged warblers most likely to be affected by the earlier arrival of spring? o a. populations will go extinct since the warblers will stop migrating to breeding grounds. b. populations will be unaffected since most species can quickly adapt to effects of climate change. c. populations will increase since warmer temperatures are generally beneficial to survival, d. populations will decline since individuals will be less likely to successfully reproduce, reset next

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

What controls activities within a eukaryotic cell?