When the combustion engine was invented it had many positive effects on society, but years later it has been discovered that the burning of oil and coal has major negative effects on the environment. What is that negative effect?

Classify the structures as homologous or analogous, depending on their structure and function.

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. chinchilla x albino a) all chinchilla b) 1/2 chinchilla, 1/2 albino c) 3/4 chinchilla, 1/4 albino

The activity of the modern sample is 1.10 bq . how long does that measurement take?