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jeyben [28]
3 years ago
12

Which is an abiotic factor that affects a freshwater ecosystem apex?

Biology
2 answers:
mina [271]3 years ago
8 0
My guess is that fat-soluble toxins that may occur in freshwater ecosystems would most affect apex species in these ecosystems. This is because fat-soluble toxins are stored in the fat reserves of animals, and then bioaccumulate up the food chain. So in this case, most of the toxin is not secreted, but stored within the food chain, and bioaccumulates, with the concentration becoming higher the further up the food chain. 
Solnce55 [7]3 years ago
7 0

Answer:

The amount of light.

Explanation:

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All Nucleotide elements
Daniel [21]

Answer:

The phosphate groups allow the nucleotides to link together, creating the sugar-phosphate backbone of the nucleic acid while the nitrogenous bases provide the letters of the genetic alphabet. These components of nucleic acids are constructed from five elements: carbon, hydrogen, oxygen, nitrogen, and phosphorous.

Explanation:

8 0
2 years ago
Evidence for evolution includes the presence of _______________________, which are similar structures shared by different specie
Ann [662]
The answer is <span>d. homologous structures.

Homologous structures are </span><span>similar structures shared by different species. For example, the anatomy of joints in bones of birds and dinosaurs, support the idea that these two groups have a common ancestor. But since these two groups are different enough to be separated into different classes, it can be concluded that they evolved from the common ancestor.</span>
4 0
3 years ago
Read 2 more answers
The relationship between humans and their digestive bacteria can be described as... A) Commensalism B) Competition C) Mutualism
Flura [38]

Answer: The correct answer is -

C) Mutualism.

Explanation:

Mutualism is a type long term biological relationship between two organisms belonging to same or different species in which both are benefitted from one another.

For example - E.coli bacteria, present large intestines of human, gets food and place to live in our digestive tract. In return, the bacteria produce vitamin K, which make it harder for other disease causing bacteria to establish in our system.

Thus, option C) is the right answer.

7 0
3 years ago
Read 2 more answers
Which is the correct sequence for levels of biological organization within a multicellular organism?
9966 [12]

Answer:

Atom-Molecule-Organelle-cell-Tissue

Explanation:

Biological  is a hierarchical system that arranges biological structures in the order of complexity.

In the given sequence,

  • The atom is the simplest and smallest unit
  • Molecule-It is made up of two or more atoms
  • Organelle-A specialized structure within a cell
  • Cell- Is the smallest functioning unit of life and it contains organelles
  • Tissue-an assembly of cells that perform a specific function.
3 0
3 years ago
Mass is the amount of matter in an object?
olasank [31]

Answer:

D

Explanation:

because Weight is heavy something is and mass is how heavy

4 0
1 year ago
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