Answer:
The correct answer is
18
Groups of the periodic table: The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.
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The answer should be 2. Skin fossilization is rare due to decomposition and scavengers.
Answer:
The conservation of “junk DNA” sequences in diverse genomes suggests that they have important functions.
Explanation:
Transposons move by means of a DNA intermediate, whereas retrotransposons move by means of an RNA intermediate.
Answer: The bacteria break down organic material that contain nitrogen and release it back into the cycle.
For example, bacteria breaks down a leaf, then it will release the nitrogen into the soil for plant.
The sliding filament theory of muscle contraction was developed to fit the differences observed in the named bands on the sarcomere at different degrees of muscle contraction and relaxation. The mechanism of contraction is the binding of myosin to actin, forming cross-bridges that generate filament movement.
