2. The kingdom Protoctista consists of members which are claimed by both botanists (scientists who study plants) and zoologists (scientists who study animals). For example, green algae, red algae and brown algae, which carry out photosynthesis, used to be classified under the plant kingdom but are now classified under kingdom protoctista. What does this tell you about the classification of living things?

a time line cause it goes from 685 to 978

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.

flooding wildfire landslides climate change the factors listed have an immediate effect on the animal populations found in any habitat. the four factors would lead to a death. b emigration. eliminate c immigration. d mutations.