Identify whether the changes to biodiversity are natural or due to human intervention. A mass extinction occurs after
several volcanic eruptions.
A species of wasp is outcompeted
by several other species and
goes extinct.
A population of grubs decreases
as the population of moles, a
predator of grubs, increases.
A species of wildflower goes
extinct after land is cleared
for agriculture.
Three populations of migratory fish
decline after the construction of
a hydroelectric dam.
The number of offspring produced
by a population of frogs decreases
after pesticides enter their pond.
Natural
Human Intervention

Tara sees a commercial for a brand of pills that promise to boost energy and people perform better in work and school. as people in the commercial talk about how much better they feel when taking the pill, tara notices a message on the bottom of the screen that reads, "this pill is not approved by doctors and has not been tested in controlled experiments." what is the best conclusion that tara should make about the commercial? it is making scientific claims based on subjective observations. it is making scientific claims based on opinions instead of pseudoscientific facts. it is making pseudoscientific claims based on objective observations. it is making pseudoscientific claims based on opinions instead of scientific facts.

Lucia is walking barefoot in her yard. she accidentally steps on a nail. how will her nervous system work to generate a reaction? arrange the eventschronologically.

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.