I am thinking the rock that forms from lava that cools quickly is D) Obsidian.
Answer:
for food, water, shelter, mates, light, and other resources needed for survival and reproduction.
Explanation:
hope this helps
so sorry if this is wrong
During DNA replication, the hydrogen bonds must be broken between the complementary nitrogenous bases in the DNA double helix
Answer:
a. commensalism is the correct answer.
Explanation:
By growing on the trunk or branch of a tree, a lichen gains height and exposure to sunlight for photosynthesis. The tree is not harmed by the lichen but does not benefit either. The relationship between the lichen and the tree is commensalism.
Commensalism is a relationship between two organisms where one organism gets benefits from other organisms without causing any harm or any damage from the relation as it one side symbiotic relation.
In this, we can see lichen is getting benefits from the tree.
for example, lichen is getting following benefits from the tree such as ( a lichen gains height and exposure to sunlight for photosynthesis.) and they are causing any harm to tree neither any benefits so this is a one-side symbiotic relation and thus the relationship is an example of commensalism.
Sorry the photo isn't clear