1. What does the arrow mean in a food chain? 5 points 1 Look at this food chain. lettuce greenfly ladybird thrush cat O Flow of energy from eater to food Flow of energy from food to eater shows what organism eats what shows the direction of organism been eater​

Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 → 2fe2o3. identify the value of x that will balance the equation.

What maintain homeostasis when a persons internal body temperature is 97.5°f

Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.