Biology, 16.08.2021 22:30, francisco42002
An experiment was designed to invesitgate the effect of caffeine on the heartbeat of water fleas. Two populations of water fleas were cultured. Both populations had water with the same mineral content, were supplied with identical amounts of bacteria as food, received the same amount of light, and had their temperature meainted at 20ºC. Every two hours water fleas from both populations were selected and their heartbeats monitored. The fleas of population one had caffeine amdnistered five minutes before the heartbeat was checked. The fleas of population two were given nothing. Match each factor with the correct term from the list below. The terms may be used more than once.
Answers: 2
Biology, 21.06.2019 14:30, rileigh2302
What is histamine and what is its role in allergic reactions
Answers: 1
Biology, 21.06.2019 22:00, sabrinarasull1pe6s61
Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses
Answers: 1
Biology, 22.06.2019 10:30, anayabeatriz
Which of the following is a true statement? question 8 options: populations can't evolve, only individual organisms. individuals have adaptations that can change over time. individuals have traits that may or may not make them successful at reproduction. individuals evolve to have adaptations.
Answers: 1
An experiment was designed to invesitgate the effect of caffeine on the heartbeat of water fleas. Tw...
Mathematics, 31.03.2020 19:01
Arts, 31.03.2020 19:02
Law, 31.03.2020 19:03
Mathematics, 31.03.2020 19:05