Which form of bacteria is matched correctly to its description ?

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

What molecules does hemoglobin decay into over time