Huge volume of suspended particles in atmosphere suspended particles block sunlight to earth solar radiation reduced mean global temperatures drop some life forms become extinct the hypothetical scenario on earth could be the result of a) another ice age. b) the rise of sea level. c) massive volcanic eruptions. d) increased greenhouse gases.

The pressurized plants and fungi mentioned in the video have some surprising similarities. what differences would you expect them to have?

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.

Select the correct answer from each drop-down menu. the lac operon in e.coli regulates genes that code for enzymes required for breakdown of lactose. the lac operon is operon that is activated in the presence of .