Tại sao con heo bị bệnh dịch tả

Which experiment would most likely contain experimental bias

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point