Please help me anyone 1. The butterfly bush Buddleia davidii is a common garden shrub visited frequently by butterflies collecting nectar. In one period of observation, 46 visits were recorded to a bush which had purple flowers. In the same time there were 28 visits to a bush with white flowers.

The observer wondered if this was a significant difference.

(a) state a null hypothesis for this observation (b) Choose an appropriate statistical to analyse this data and interpret your result.

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous

Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.

The earths core is made up mainly of what 2 substances? 2. like an egg, earth has a core, a layer surrounding the core, and a thin, hard outer layer. which layers of the earth match the layers of an egg?