birds with smaller beaks struggled to eat the large seeds and often gave up. Based the data provided, is there evidence to demonstrate the beak depth is a product of natural selection?

substitution is the answer in this case

i wish i could with all of them i can barley see the first one so here's the answer to the first one b

option d : from a warmer substance to a cooler substance

according to second law of thermodynamic, heat flows from higher to lower temperature region. heat is the transfer of energy from an object at higher temperature to an object at a lower temperature. so energy flows from warmer to colder objects.