LS2-4 Which ecological principle does an energy pyramid illustrate? A. Large amounts of energy ate lost in the transfer between trophic levels B. The ultimate source of energy in the biosphere is the sun. C. Consumer organisms are more important than producer organisms. D. Most producer organisms use photosynthesis to create organic compounds.

yes its like the dead sea which is full of salt which makes you stay afloat

so yes an egg will float in salt

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

i am sorry but i need more information and a picture.