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Vera_Pavlovna [14]
3 years ago
7

What does the first one mean?

Biology
2 answers:
Ket [755]3 years ago
8 0

Think of when pangea was a thing, when the continents were "all together". They moved apart, obviously, and they can fit like puzzle pieces. If that makes sense? Because they were once all together.

Katena32 [7]3 years ago
6 0
Puzzle pieces fit together.
Some continents look like they can fit together.
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What is the difference between lymph and blood
natka813 [3]

Blood and lymph are the two circulating fluids in the animal body. Blood belongs to the circulation system whereas lymph belongs to the lymphatic system. Blood contains pigments which carry oxygen. Therefore, blood can be found in different colors in different types of organisms. But, lymph is a colorless fluid. Blood is composed of red blood cells, white blood cells, platelets and a fluid called plasma. Lymph is composed of white blood cells and a watery fluid. Both blood and lymph possess a circulatory function as well as an immune function. The main difference between blood and plasma is that blood circulates inside blood vessels whereas lymph circulates inside lymphatic vessels.

6 0
2 years ago
Each cell has a structure that separates the inside of the cell from.the environment. What cell is this?
kotykmax [81]

Answer:

Either the cell wall or the cell membrane.

Explanation:

All cells have cell membranes which line the outside of the cell, and some cells have cell walls, which also line the outside of the cell. Since all cells have cell membranes I am inclined to believe that the correct answer would be cell membranes.

8 0
3 years ago
The frequency of a certain trait in a population will increase over many generations if which of the following is
Zigmanuir [339]
C) As the trait will then pass to others without it and through natural selection will become abundant
7 0
3 years ago
How do fungal species help other organisms in their ecosystems?
nignag [31]
Fungal species help other organisms in their ecosystems in many ways,
<span>Fungi are decomposes - they recycle the dead organs.
</span>They also maintain overall stability in ecosystem.
5 0
3 years ago
MDCK and A549 cell cultures were grown in complete minimum essential medium (MEM) with 10% fetal bovine serum (FBS), 100 U/mL pe
UkoKoshka [18]

Answer:

Used the C1V1 = C2V2 method for calculations

Explanation:

Component      Calculation       Volume of Stock to be added

FBS:             100*V1 = 10*25                  2.5 mL

Glutamine:     200*V1 = 2*25                  0.25 mL

Penicillin:      10000V1 = 100*25          0.25 mL

Streptomycin:     10000V1 = 100*25            0.25 mL

NB: C1 = Stock Concentration; V1 = Volume of stock required; C2 = Final concentration required; V2 = Final volume required

3 0
3 years ago
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