10 Which of the following statements best explains how heat flows by
conduction?
A large mass of warm air rises, replacing the cooler air above
Energy is transferred by electromagnetic waves.
A large mass of air begins to move faster.
Energy is transferred from direct contact between two objects.
Sunlight warms an area of Earth's surface. Winds then carry thermal energy 1 po

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

What does x represent in the formula for the compound xcl4?

Nonpoint source pollution is difficult to control because it