Students decide to remove the litter from an abandoned park and plant trees. Which of the following observations provides the best evidence that the action of the students has had a positive effect on the health of the park ecosystem?

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Which of the following two events occur to create a sea breeze? select all that apply. warm air rises on the ocean and moves toward the land to cool warm air rises on land and moves toward the ocean to cool cool air moves from the ocean to be warmed by the land cool air moves from the land to be warmed by the ocean

Based on its chemical properties, identify the position of each chemical family on the periodic table.