Which event most likely resulted in the appearance of the first land plants 440 million years ago? A. a mass extinction of plant-eating animals
B. development of oxygen in the atmosphere
C. a major meteor impact that blocked sunlight
D. the breakup of Pangaea Into separate continents

Which of these is not a function of some membrane proteins ? a.allowing polar molecules to enter the cell b.recognizing other types of cells c.receiving messeges from other cells b.carrying messages to oher cells

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

Which of the following statements is accurate about evolution? question 10 options: natural selection only eliminates odd individuals. evolution means that a population never has changes in its genetic frequencies. mutations are always harmful. evolution means that a population undergoes changes in its gene frequencies over time.