What physical and behavioral adaptations do zebras have that them evade predators? a. live in families and travel in large numbers for protection; bunch together to confuse the predator with their stripes or run away at speeds up to 40 m. p.h; .sharp teeth and strong hoofs to defend themselves b. live solitary lives unless feeding when they bunch together for protection; short legs and necks so predators have harder time holding on when attacked; stripes so they blend in with their surroundings c. live in families and travel in large numbers for protection; sharp teeth for defense; develop stripes as they mature to better blend in with the herd because they are provided less protection from their parents d. feed primarily at night for safety from predators; scatter to feed so predators have a harder time finding them; long necks to see over tall grasses and spot predators before they get too close

Hydrilla (hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in florida. hydrilla has already been introduced to hundreds of bodies of water throughout florida, hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions. hydrilla • describe how hydrilla affects native plant and animal species. include both a biotic and an abiotic limiting factor. • suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla

Our planet has experienced five major extinctions in the four billion year history of life. the first, 450 million years ago, occurred shortly after the evolution of the first land-based plants and 100 million years after the cambrian explosion. the second extinction occurred 350 million years ago, causing the formation of coal forests. next earth experienced two mass extinctions during the triassic period, between 250 and 200 million years ago. the fifth mass extinction occurred 65 million years ago, ending the reptilian dominance of the earth. according to richard leakey, the sixth mass extinction is happening right now. leakey suggests that we, the human race, are the cause. each year, at our hand, approximately 50,000 species vanish from earth. he believes that man is destroying earth at a rate comparable with the impact of a giant asteroid. leakey's statistics indicate that 50% of earth's species will become extinct within the next 100 years assuming leakey's hypothesis of a sixth mass extinction to be true, how will we expect the model to change? a) a sharp spike in the graph approximately 100 million years from now b) a dip in the graph, followed by a sharp spike about 100 million years from now c) a sharp spike in the graph immediately following the "0" location of the x axis d) a plateau following the "0" mark on the x axis, followed by a gradual rise to a new peak

An organ composed mainly from epithelial and nervous tissues converts vibrations into impulses that are sent to the brain . which organ could this be ?