The sponges found in Lake Baikal are filter feeders. Why might
gathering energy in this way be an advantage over photosynthesis in this
part of the lake?

Select the correct answer. you have a nightlight plugged into an outlet in the hallway, which uses 3.5 watts when plugged in. if the house circuit provides 120.0 volts, what is the current through this bulb?

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer