Most___animals have developed circulatory systems to transport materials.

unicellular

multicellular

both a and b

none of above

If the sun moves from east to west does that mean that shadows move from north to south?

How are bacteria able to adapt to a rapidly changing environment? A) During transcription, RNA polymerase is unable to bind and commence transcription.

Which component of the gastrointestinal system can synthesize certain vitamins? circular folds liver enzymes gi flora intestinal yeasts?

Hat is responsible for respiration in fish? lungs gills tracheae skin

Is glass a substance, homogenous or heterogeneous

Describe one benefit and one limitation of how the trichoplax can reproduce by simple division

The total economic value of an ecosystem: a. is composed of the direct values an ecosystem provides upon which a price can be placed, such as crops and medicinal plants. b. is the monetary value of all of the services an ecosystem provides.

Reflita sobre alguma mudança planetária que vem acontecendo e correlacione-a com atividades humanas de alteração do meio. Apresente sua conclusão.

Which of the following is not a function of carbohydrates in the body?

Steps that occur in the scientific process are listed below. What is the correct order in which the steps should occur? (put them in order) A. Conduct an experiment. B. Draw a conclusion. C. Make an observation. D. Analyze the results. E.