Considering the following statements;
A. It can exist without a constant source of energy input
B. It must contain consumers but can exist without producers.
C. It involves interactions between biotic and abiotic factors.
D. It can exist on land, but it cannot exist in lakes, rivers, or oceans.
The correct statement is C. that an ecosystem involves interactions between biotic and abiotic factors.
Biotic factors are the living things in an ecosytem, they include plants, animals, bacteria, fungi and others. Abiotic factors on the other hand, are the non-living factors in an ecosystem, they include water and air, sunlight, the amount precipitation in an ecosystem is also an example of abiotic factor. The two types of factors are crucial for an ecosystem to exist and thrive.
I DON'T THINK THERE IS A RIGHT ANSWER FOR THIS BECAUSE WHAT I FIGURED OUT IS Leucine - Lysine - Cysteine - Phenylalanine THIS AND I DON'T THINK THERE IS ANY OPTION.
I MIGHT BE WRONG SO DON'T JUDGE ME:))).
These changes are brought about by the secretion of estrogen and androgens by the ovaries.
The ovaries start producing these hormones which are responsible for these changes that Molly is experiencing. Her puberty is just starting, which means that her body is getting "modified" so as to accommodate her new alterations.
Answer:
I think its D sorry if you get it wrong
Lactase an carbonic anhydride are examples of what type of substance is enzymes.