What are the characteristics of archaebacteria

Archaebacteria are primitive bacteria that have a cell wall with branched lipids that helps them tolerate adverse conditions.

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Single celled prokaryotes,  no nucleus, free floating genetic material

Explanation:

The characteristics of archaebacteria include the following -

1. All the archaebacteria are unicellular organism, which are the oldest prokaryotes found on earth.

2. They are capable to survive in extreme weather conditions such as volcanoes

3. Their cell wall is made up of lipids with linkages of "ether"

4. They are devoid of nucleus, Golgi complexes, lysosomes, ER, mitochondria.

5. Cell organelles are not membrane bound and thus genetic material floats freely.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.