Some species of penguins, such as chinstrap penguins, depend on open water for their survival. Other species of penguins, such as Adélie penguins, depend on ice. Over the last 20 years, the population size of chinstrap penguins has increased, and the population size of Adélie penguins has decreased. An increase in global air and water temperatures likely caused <span>these changes in population size.</span>
The scrotum holds the testes.
Answer:
Preservation of remains (protection against scavenging, erosion and environmental damage) High pressure to promote mineralisation of remains (i.e. turn hard body parts into fossilised rocks) Anoxic (low oxygen) conditions to protect against oxygen damage and prevent decomposition by saprotrophs
Explanation:
The ratio of 
indicates the purity of nucleic acid.For pure DNA it should lie between 1.8-2.0.Whereas for RNA it should be greater than 2.
This is calculated for DNA using the given values of absorbance-
= 2.71
As the value is greater than 2.0,it reflects the RNA contamination in the sample.
Answer:
If you watch carefully how the amoebas move, you're likely to find legs squirming and wiggling around trying to cover space. So this proves amoebas are alive.
Explanation:
Amoebas are living organisms belonging to the kingdom Protista. They are single-cellular organisms that move by extending and moving pseudopodia, extensions of their cellular membrane.
