Barnacles are stuck to a whale. The barnacles benefit and the whale is unaffected. This is an example of communication commensalism parasitism mutualism

A team of archaeologists excavating a sedimentary rock layer come across some primitive hunting tools used by early humans. As the dig progresses, they unearth the fossilized remains of a dinosaur from another layer of the sedimentary rock.

Are Lichens living or non living?

A negative feedback loop works by turning off the stimulus that initiated the feedback loop. True False

During the gastrula stage of embryo development, the cuplike opening becomes the mouth in _[blank]_. placental mammals chordates deuterostomes protostomes

Marco and andre are twins. Which of these characteristics are they most likely to share

Which term refers to contrasting forms of the same gene

As a mouse undergoes respiration, it produces lactate. This type of respiration can be classified as acidic alcoholic aerobic anaerobic

Which continent lies almost completely within the tropical zone?

Which phrase best summarizes the theory of evolution by natural selection? a. Only the strongest animals survive. b. Life must come from other life. c. Populations change over long periods of time. d.

Why are people now getting disease that were considered eradicated?