Answer:
it is only used to view a dead specimen
Answer:
The environment usually refers to all the biotic and the abiotic components that are surrounding us. This environment undergoes changes depending upon various factors which can be natural and/or due to the anthropogenic activities.
When there occur rapid environmental changes, then it directly affects the lives of species, in different ways, such as-
- Those species that are comparatively weaker in adapting according to the environmental changes that occur, will not be able to cope up with the new environment. They may become extinct.
- Some variety of species will be able to adapt to the new environment because of their easily adapting capabilities.
- The traits that will be developed within the species in the new environment will be more successful in terms of reproduction.
- The previously existed traits may have a harmful impact in the newly formed environment.
In any ecosystem, there are factors to control populations.
In a stream, the predators of a certain organism will help keep populations checked. Moreover, the limited resources, such as space and food, will keep the population from growing out of control.
DNA double helix is made of 2 complementary DNA strands . These strands are held together by hydrogen bonding between the complementary bases on each strand.
Nucleotides are the building units of nucleic acids. Bases are components of the nucleotides.
Bases on one DNA strands pairs with bases on the complementary DNA strand through hydrogen bonds.
bases can pair with the complementary base.
Complementary base of thymine is adenine .
Therefore thymine pairs with adenine.
