Which of the following is an observation and not an infrence

1.a) cup with steam coming from it will be hot to the touch
2.b) dark clouds in the sky will mean rain later in the afternoon
3.c) bubbles form when two chemicals are mixed together
4.d) a plastic bag moving along the ground is being pushed by the wind

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.

Do you think the gene eef1 alpha1 supports cell theory? explain your response.

Iwill mark brainliest and all that sha-bang. what is the function of the endocrine system? a. control longer term response in the body. b. transmit messages throughout the body. c. remove waste from the body. d. all of the above