The mesosphere helps protect the Earth by A.
enabling satellites to orbit safely.
B.
burning up meteors and rock fragments.
C.
absorbing harmful rays from the Sun.
D.
allowing pollution to escape to space.

Sea levels are rising due to climate change while increasing numbers of people are moving into coastal areas. to accommodate more people, there has been increased construction of beachfront resorts and condominiums. how is this impacting sea turtle numbers and biodiversity and why? a. the increased human population in coastal areas has meant that more food is available to the turtles (e.g., dropped food, waste from restaurants), which has led to an increase in the numbers and diversity of sea turtles. b. there has been very little change in the numbers and biodiversity of sea turtles because the planet is so vast that they can simply relocate to less crowded beaches. c. this has resulted in a decrease in numbers and diversity of sea turtles because it is restricting available nesting sites, and hence reproduction. d. this has resulted in an increase in numbers and diversity of sea turtles because people are around to protect them from natural predators.

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees