Answer:
Human impacts on marine ecosystems. Human activities affect marine ecosystems as a result of pollution, overfishing, the introduction of invasive species,and acidification, which all impact on the marine food web and may lead to largely unknown consequences for the biodiversity and survival of marine life forms.
Hi! Spores are produced by sporophyte, or the spore bearing generation. Spores can be found in non seed bearing plants; like liverworts, hornworts, mosses and ferns. In ferns, you could physically find spores on the underside of the frond. These sporangia may clump together as well, to form sori. I hope this helps, let me know if you have more questions!
D) It controls materials that enter and exit the cell
An independent variable<span> is the variable that is changed or controlled in a scientific experiment to test the effects on </span>the dependent variable.
<span>A </span>dependent variable<span> is the variable being tested and measured </span>in a scientific experiment<span>.</span>
