Which of the following body systems work together for support, protection, and movement? A. respiratory and cardiovascular
B. skeletal and muscular
C. skeletal and integumentary
D. digestive and respiratory

Invasive species are one of the major threats to biodiversity. these species multiply quickly and compete with native species for food, sunlight, spac and other resources. on the map, determine the area where native species will have limited resources available to them due to invasion threat from invasive species threat very low low medium high very high

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

What was the land like over 500 million years ago? what was under the sea?