Answer:
The answers are B and D.
Explanation:
The co-evolution of plants and insects led to an increase in both populations due to the mutualist benefit of this relationship. As plants started to develop rewards for the insects (such as pollen and nectar) the insects started to be able to travel further and therefore colonize, then as diversification of flowers began, also the insects started to diversify in order to afford the vast amount of food for them. Insects helped plants to pollinate and plants helped insects to spread. But as insects were evolving, some mammals and birds were also doing so, therefore, plants developed fruits with seeds in order to increase their dispersal. As answer D exposes, animals not only enhanced pollination but they also provided seed dispersal.
Answer: The hypothesis can be completed as-
If the type of food available changes, then the frequency of beak also changes.
Explanation-
Natural selection is a theory of evolution that was given by Charle's Darwin. According to this theory, organisms that are capable of adapting themselves ( that is having beneficial traits, which enhance their survival) in the changing environmental conditions survive and increase their number by means of reproduction.
According to the information given in this question, the type of food available is changing, which will result in the change in the frequency of bird beaks inhabiting that area. This would indicate their adaptation so as to survive under the changed food type, otherwise they will be unable to consume the food resources and will die out.
Erosion is the gradual destruction of something by wind, water, etc.
A large rock breaks down into sediment involves erosion because it is being broken down by water (because it says the sedimentary rock is formed at the bottom of a river).
The upper layers of deposits put pressure on the lower layers also involves erosion because the upper layers are eroding the lower layers, making it possible for the layers to stick together.
If you look at loop of Henle in kidneys, these vary depending in the osmo and ionoregulatory needs of an organism; a dessert rat for instance will have an increadibly long loop of Henle to concentrate urine, other organisms will not.
What are the "following" I need to know the possible answers.