Which equation represents the law of conservation of energy in a closed system? kei + pei = kef + pef pei + pef = kei + kef kei – kef = pei – pef kei – pef = pei – kef.

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?

What kind of interaction is depicted in the image? a. intraspecific, direct b. intraspecific, indirect c. interspecific, direct d. interspecific, indirect e. invasion

Living organism in our word are connected to other variety of ways