There are several competing theories that explain why dinosaurs became extinct. One theory states that an asteroid impact occurred causing a dust cloud that blocked sunlight. Another theory states that volcanic gas and dust in the atmosphere blocked sunlight. Why are both these theories reasonable explanations for the extinction of the dinosaurs?
They both would have affected large animals only such as dinosaurs
They both would have affected large animals only such as dinosaurs

They both would have caused the instant extinction of dinosaurs worldwide.

They both would have caused the instant extinction of dinosaurs worldwide.,

They both would have resulted in less plant life and less available food.

They both would have resulted in less plant life and less available food.,

They both would have caused the temperature of Earth to increase.

Asquare kilometer of forest has 200 deer. what is the term that is used to describe this number?

Sand spinifex grass is adapted to growing on sand dunes. it is a rapidly spreading plant and the creeping runners produce new root systems. which of these best explains the benefits of these features? a. it limits water loss through the leaves. b. it provides support by anchoring the plant. c. it protects the plant from predators. d. it allows the plant to tolerate salt. reset submit

In tossing one coin 10 times, what are your chances for tossing a head? a tail? 2. in tossing one coin 100 times, what are your chances for tossing a head? a tail? 3. in tossing one coin 200 times, what are your chances for tossing a head? a tail? deviation = ((absolute value of the difference between expected heads and observed heads) + (absolute value of the difference between expected tails and observed tails)) divided by total number of tosses. this value should always be positive. 4. what is the deviation for 10 tosses? 5. what is the deviation for the 100 tosses? 6. what is the deviation for 200 tosses? 7. how does increasing the total number of coin tosses from 10 to 100 affect the deviation? 8. how does increasing the total number of tosses from 100 to 200 affect the deviation? 9. what two important probability principles were established in this exercise? 10. the percent of occurrence is the obtained results divided by the total tosses and multiplied by 100%. toss the coins 100 times and record your results. calculate the percent occurrence for each combination. percent head-head occurrence: percent tail-tail occurrence: percent head-tail occurrence: