Answer:
<em>The correct option is D) How is the number of frogs in Massachusetts affected by pollution</em>
Explanation:
A scientific question can be described as a question which can be answered through the scientific method of research. Based on the scientific question, a hypothesis can be formulated. For example, for the option D, the hypothesis can be 'if the pollution increases, then the number of frogs decreases.' A hypothesis is a tentative statement which can be tested through experiments. Based on these experiments, results are formulated and conclusions are drawn. The question mentioned in option D can be answered through this method hence, it is the correct option.
Answer:
What type of plants are extinct?
Explanation:
Prehistoric extinctions
Cooksonia.
Archaefructus.
Abies milleri.
Dillhoffia.
Trochodendron nastae.
Araucaria mirabilis.
Araucarioxylon arizonicum.
Sphenophyllum miravallis.
"Like many moths in forests, the peppered moth tends to rest (or "perch") on tree trunks during the day. They do most of their flying at night. So it would probably be a good thing if the moths look similar to the trees that they perch on, right? Then they can be camouflaged from birds that want to eat them.
Before the Industrial Revolution, the light peppered moth was common, while the dark form was very rare. The light moths blended in with the light-colored trees. However, the Industrial Revolution changed the tree colors.
Dark form of the peppered moth
After the pollution from the Industrial Revolution started affecting trees, most of the collected peppered moths were of the dark form. Click for more detail.
As the trees darkened with soot, the light-colored moths were easier to see. They were eaten by birds more and more, while the rare dark colored moths blended in better on the darker trees. This made the dark colored moths have a higher survival rate. They lived longer and passed their dark colored genes onto their offspring or young. " got this from https://askabiologist.asu.edu/peppered-moth use that link if you need more of a explanation
Rivers and streams erode the land as they move from higher elevations to the sea. Eroded materials can be carried in a river as dissolved load, suspended load, or bed load. A river will deeply erode the land when it is far from its base level, the elevation where it enters standing water like the ocean.
