A frog's lungs don't work that well, but since it's skin is so thin, oxygen and carbon dioxide can pass trough it.
thymine
adenine
cytosine
guanine
Explanation:
uracil is not because uracil is only RNA.
Answer:
Sometimes, there can be random fluctuations in the numbers of alleles in a population. These changes in relative allele frequency, called genetic drift, can either increase or decrease by chance over time. ... Genetic drift can result in the loss of rare alleles, and can decrease the size of the gene pool.
We need the statements to answer your question!! Also background information
Answer:
Answer is option D.
The sun's energy is transferred through the vacuum of space to Earth by radiation.
Explanation:
The three forms of heat transfer are conduction, convection and radiation. The process of heat transfer between two solid objects in contact with one another due to a temperature difference is known as conduction. An ice cube melts while you hold it in your hand, is an example of conduction. Here, the heat energy from the hand is transferred to the ice cube and the ice melts.
Convection is the heat transfer occurs in moving materials (liquid or gas) due to the temperature difference between two regions. Hot soup rises to the top of the bowl, while cooler soup sinks to the bottom is an example of convection. The hot soup is less dense than cold soup, so it rises to the top and the cold soup at the top sinks to the bottom.
Radiation is a form of heat transfer where the heat energy is transferred through electromagnetic waves like infrared, UV rays etc. The sun's energy is transferred through the vacuum of space to Earth by radiation. Heat energy is transferred through vacuum by infrared radiation emitted by the Sun. The Earth absorbs it and turns the energy into heat.
