Los lobos en el ecosistema cazan conejos, los cuales comen las plantas presentes en el ecosistema. Este es un ejemplo de: A. canibalismo B. una red alimenticia C. una cadena alimenticia D. fotosíntesis​

Acid rain is the direct result of acid released by burning fossil fuels. select the best answer from the choices provided ot o f true or false

Andesitic rocks have mineral compositions between those of and basaltic rocks. a. conglomerate c. granitic b. metamorphic d. organic select the best answer from the choices provided a b c d i need asap

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data