Do the data support or refute the null hypothesis? 5.19 < 7.82, so the null hypothesis is supported.

5.19 < 7.82, so the null hypothesis is refuted.

With 5% certainty, the null hypothesis is supported.

With 7% certainty, the null hypothesis is supported.

Which of the following are causes of coastal erosion? check all that apply. beach grasses and other plants trap windblown sand. wave action carves away the coastline. groundwater under pressure is forced to earth’s surface. artificial structures stop the natural flow of sand along the coast. underground caves collapse as bedrock is dissolved.

Which of these statements are true about scientific theories and hypothesis

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.