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Stells [14]
3 years ago
5

PLZ HELP! WILL GIVE BRAINLIEST!

Biology
2 answers:
Gekata [30.6K]3 years ago
8 0
I believe the answer for 2 is D. 02 not sure but i think.Next for 3 the answer is C. the mitochondria. Finally for 4 i believe the answer is C. H2O.

I’m not enduring these are the answers these are just my predictions!
Anastaziya [24]3 years ago
5 0

Answer:

2. D

3. B

4. A

Explanation:

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Scientific method lab results
-Dominant- [34]

Answer:

1.Observation and description of a phenomenon. The observations are made visually or with the aid of scientific equipment.

2.Formulation of a hypothesis to explain the phenomenon in the form of a causal mechanism or a mathematical relation.

3.Test the hypothesis by analyzing the results of observations or by predicting and observing the existence of new phenomena that follow from the hypothesis. If experiments do not confirm the hypothesis, the hypothesis must be rejected or modified (Go back to Step 2).

4.Establish a theory based on repeated verification of the results.

Explanation:

8 0
3 years ago
When a strong acid is added to a strong base a_________________ reaction occurs in the product will have a PH closer to_____
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Answer:

A

Explanation:

Acids and bases when mixed neutralize eachother. and 7 is neutral on the PH scale

7 0
3 years ago
What distinguishes disruptive and directional selection pressures when both select for extreme genetic traits?
Stella [2.4K]

Answer:

Yes both are different. In directional selection one of the extreme traits is favored, whereas in disruptive selection both the extreme traits are favored.

Explanation:

Directional: If selection acts to eliminate one extreme form and supports the other extreme then the peak shifts in the direction which is selected by the nature.

Disruptive: If the selection does not favor the mean character value, rather favors both the peripheral character values then this kind of selection is called disruptive selection.

5 0
3 years ago
Read 2 more answers
Which of the following statements is correct regarding the evolution of flight?
xxTIMURxx [149]

Answer:

d.The wing-assisted incline running theory postulates that wings were initially used to maintain balance while climbing up slopes.

Explanation:

Two theories were given to explain the origin of avian flight. The top-down theory suggested that the birds' ancestors were tree dwelling species. They took help of wings to glide from tree to tree in order to avoid predator or catch prey. The bottom up theory suggested that the birds' ancestors were ground dwelling species. They took help of wings to maintain a balance and provide a lift for efficient running.

Wing-assisted incline running was a mixture of both the above theories and gave a balanced view point. According to it, birds' ancestors used wings to maintain a balance while running up inclined slopes. The wings helped them to save energy while scaling slopes and eventually a flight mechanism was also developed.

5 0
3 years ago
Sister chromatids separate (and are now called chromosomes) and begin to move toward the poles of the cell. This happens in
NeX [460]

Answer:

sister chromatids separate and begin to move towards the pole of the cell during anaphase.

6 0
3 years ago
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