Why are spines considered a physical characteristic adaptation in cactus? a cactus with sharp spines

The spines make the cactus look taller.
The spines protect the cactus from animals.
The spines allow for easier photosynthesis.
The spines are the seeds of the cactus. It is not C

The softest and hardest minerals are: softest hardest

What is the angular momentum of the bar about the axle?

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.