Answer:
abiotic and biotic factors
Explanation:
abiotic factors are things like sunlight, soil, minerals, ect.
biotic factors are things like plants, animals, fungi, ect.
Answer:
grass,grasshopper, frog,snake,hawk
The mechanism that affected the gene pool of the immigrants that entered the United States through Ellis Island from 1892 to 1954 is B. gene flow. Gene flow is the transfer of genes or alleles from one population to another. The migration of millions of individuals from countries across the Atlantic Ocean to the United States is responsible for the changes in the gene pool of the immigrants.
Answer:
2. presence of plasma membrane 3. lack of a nuclear envelope
Explanation:
Both archaeans and bacteria are prokaryotes. The prokaryotic organisms lack the well-defined nucleus and membrane-bound organelles. These organisms have their genetic material present in the cytoplasm itself.
Both archaeans and bacteria have a plasma membrane around their cells. The presence of plasma membrane around cytoplasm is exhibited by all the living beings including all the prokaryotes. Plasma membrane in archaeans and bacteria has the same basic structure. It has two layers of phospholipids in which proteins are embedded.