Atmosphere:

is mostly made of nitrogen

is weightless

protects earth from harmful radiation

contains water vapor

is affected by events in the hydrosphere

When a scientist conducts an investigation, which of the following is the first thing he or she should

Which two cell parts are most likely found in both types of plant cells and animal cells?

The student performed an experiment to test his hypothesis about sunlight and plant height using two plants. He kept everything the same between two tomato plants except he exposed them to different amounts of sunlight.

True or False: An organism's scientific name tells you the family in which the organism belongs.

In what part of the long bone does hematopoiesis occur

How would you explain the relationship between insulin and glucose

When are the homologous pairs of chromosomes separated? 1. Telephase ll. 2. Metaphase l 3. Anaphase l. 4. Fertilization

In what form does the sun's energy arrive on Earth?

Some lizards have an adaptation that allows their tails to break off with minimal damage to bones, nerves, blood vessels, and muscles. This type of lizard can then regrow the missing portion of the tail.

1. A source of simple carbohydrates is a. seeds c. fruits b. brownrice d. potatoes