What type of organism would recycle a dead tree in the forest? a) decomposer b) omnivore c) producer d) scavenger

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?

If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?

What is the farthest destination to date for a human spaceflight mission?