Answer:
(1) Conduction - (B) A seagull stands on ice and loses heat through its feet.
heat is lost due to direct contact.
(2) Free Convection - (E) A dog stands outside on a cold, but windless, day and loses heat to the air. There is heat transfer due to difference in temperatures.
(3) Forced Convection- (A) A bear stands in a cold flowing stream and loses heat to the water. Here we consider buoyancy effects.
(4) Evaporation- An athlete sweats while running a race. water turns evaporates from the body taking a away heat.
(5) Radiation - (C) A lizard absorbs heat from the sun's rays. Sun´s heat travels as radiation.
Explanation:
Natural selection act directly upon <u>Alleles</u>
Explanation:
Genes, such as that of fur color, have many variants called alleles. Natural selection act on the alleles and chooses the best fit for an environment and eliminates the disadvantageous ones from the population over generations. Mutations are a rare occurrence that increases the number of allelic variants of a genes on which natural selection can act upon.
The gases and dust particles thrown into the atmosphere during volcanic eruptions have<span> influences on </span>climate<span>. Most of the particles spewed from </span>volcanoes<span> cool the planet by shading incoming solar radiation. The cooling </span>effect can<span> last for months to years depending on the characteristics of the </span>eruption<span>.</span>
Answer:
Genes are a set of instructions that determine what the organism is like, its appearance, how it survives, and how it behaves in its environment
Explanation:
