For question number 1, the answer is B.
For question nunber 2, the answer is D.
An organism reacts to changes in its environment. this is called Behavior
Abscission layer is the layer of cutinized parenchyma cells that develops in the abscission zone. The abscission zone form across the base of the plant part, where the break eventually occurs. During the photosyntesis chlorophyll using sunlight produces sugar and storches which are used as food by plant. And sugar accumulate in leaves.
Dead mustard plants disintegrate into the soil And the worms in the soil see it and are like woah man let’s fricking rave! So these worms rave until the riff of dawn and the air gets so dense it just turns into nitrogen. The rave vibes were so lit that the nitrogen had this gold ora to it. The worms gathered it all and in a way, molded it into a seedling. They were like “ we gonna name it marigold cuz we had a pretty merry good time”. So yea science is wild isn’t it?
Answer:
1. Damaged bases are recognized.
2. Part of a single strand is excised.
3. DNA polymerase I adds correct bases by 5′ to 3′ replication.
4. DNA ligase seals the new strand to existing DNA.
Explanation: