What is found in all adult exhinoderms

Which of the following is a question of morality? a.) delierately reporting false data b.) accidentally reporting false data c.) kepping a sloppy record of experimental observation d.) condition a drug experiment which will harm a lab rats

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?