Which of the following statements is true?
parts of an ecosystem only include biotic factors such as plants and animals.
if a common plant in an ecosystem becomes diseased, the ecosystem may become unbalanced.
abiotic factors include decomposers such as fungi and bacteria.
tundras have a high diversity of species.

Which of the following is not a product of the second stage of glycosis

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?