Giraffes’ towering height is the key to their ability to survive in their often-dry habitat. It allows them to reach the tender leaves at the top of acacia trees. Because these leaves are about three-quarters water, they also provide moisture when there are no watering places nearby. Giraffes didn’t just decide to grow longer necks to reach these leaves! Over hundreds of generations, the tallest giraffes, who could reach more leaves, became healthier, lived longer, and had more offspring. Gradually, the average height increased .3. Paraphrase the first two sentences of the text.

4. Summarize the paragraph.

The tallest land animals in the world and the largest of Earth's grazing ungulates, giraffes (Giraffa camelopardalis) live in the savanna grasslands of sub-Sarahan Africa. Giraffes exhibit several characteristics developed through their evolution in a grassland environment in which scattered trees offer a food source most other species cannot utilize, water can be scarce and predators abound.

Explanation:

in ray bradbury's short story "a sound of thunder", mr. eckels's fearfulness leads to drastic consequences for the rest of the world.

in the story, mr. eckels, who is a hunter, hires a time travel company to travel to the age of dinosaurs. although he is excited for the hunting expedition at the beginning, when they reach there and mr. eckels sees the tyrannosaurus, he feels frightened. as he is afraid of the tyrannosaurus, he steps off the path although he has been warned not to do it. by stepping off the path, the entire course of the future is affected: mr. eckart alters the future by stepping on a butterfly, which causes a new man to be elected president in the future. in that way, it is mr. eckart's fearfulness what triggers 'the butterfly effect' and what leads to drastic consequences for the rest of the world.