Read the excerpt from a black hole is not a hole. it's terrific fun to read what the original thinkers had to say for themselves. i read parts of relativity: the special and general theory by albert einstein, and found the letter about einstein forgetting to eat lunch in einstein: his life and universe by walter isaacson. i also reviewed parts of isaac newton's principia: the mathematical principles of natural philosophy (translated by andrew motte), to see what newton himself had to say. what makes these books credible sources?
-the books give opinions and arguments about science.
- einstein and newton are experts in their fields.
-the books describe einstein’s and newton’s inner feelings
.- einstein and newton persuade readers to their opinions.

Retell the main events of this story as jerry might tell them to his best friend when he returns from vacation or to his own son later in life. in the story through the tunnel

Read sentence 13 from the draft. some plants retain a great deal of their foliage through much of the spring and summer, but the leaves do not retain their green color for long. which detail would be best to add after sentence 13 to develop the topic? a. since the green color of the leaves that are bright and abundant during the warmer months will disappear by the time it is fall, it is important that the leaves are trimmed and kept freshly cut so that they will last for as long as possible. b. while the temperature outside may dictate when the fall colors of leaves appear, it is only one of many environmental factors that play a part in the changing of colors from green leaves to fall-colored leaves during the cooler months. c. if people want to enjoy the green color of leaves longer, trees should be planted where the environment is warmer and the days longer because chlorophyll in the leaves can only be manufactured and replaced with sunlight and warmth. d. the green chlorophyll normally masks the fall-colored pigments during the warmer months, but as sunlight becomes less abundant and trees become frozen, the fall colors of leaves become more visible as chlorophyll disappears.

Define the following word using the meaning of the suffix. use your dictionary if you are uncertain of the definition. argument a. full of disagreement b. act of disagreement c. state of disagreement d. quality of disagreement