Answer:
O Vestigial organs show that whales may have evolved from a common ancestor shared with land-dwelling animals
Explanation:
Vestigial organs are defined as the organs which are no longer beneficial for survival.
Whales can be observed with tiny, unused hip and pelvis bones which are vestigial organs for them as they are no longer beneficial for their survival. The vestigial organs are the evidence of evolution in organisms and in whales also these vestigial organs says that whales and land-dwelling animals may have common ancestors. Later on with evolution some land-dwelling animals might move to water systems and hip and pelvis bones become vestigial organs for them which along with time decreasing in the future offspring.
Hence, the correct answer is "Vestigial organs show that whales may have evolved from a common ancestor shared with land-dwelling animals".
Heat: it is a form of energy associated with the movement of atoms and molecules in any material.<span>The higher the temperature of a material, the faster the atoms are moving, and hence the greater the amount of energy present as </span>heat<span>.
Thermal Energy: t</span>he internalenergy<span> of an object due to the kinetic </span>energy<span> of its atoms and/or molecules. The atoms and/or molecules of a hotter object have greater kinetic</span>energy<span> than those of a colder one, in the form of vibrational, rotational, or, in the case of a gas, translational motion.
Conduction: </span><span>the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
Convection: </span>the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
Radiation: the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.
Hope this helped :)
Answer:
A mutation.
Explanation: When a cell mutates is will be permanently changed.
Answer:
D. there is less structural carbohydrate.
Explanation:
Most bacterial cells have a cell wall located outside the plasma membrane, formed by peptideoglycan or murein, which provides protection and shape to the cell. In addition to the wall, some bacteria have a polysaccharide capsule that surrounds this structure, this capsule is a carbohydrate envelope that can allow more or less flexibility to the bacterial cell. The more structural carbohydrates the polysaccharide capsule has the less flexible the bacteria will be. Thus, we can say that if E. coli has the most flexible cell envelope, compared to the envelope of other bacteria, it is because there is less structural carbohydrate in the E. coli envelope.
Answer:
Epidemiological Study
Explanation:
This type of study is called and epidemiological study. The design of this study uses a group or individual that have been exposed or not been exposed to a certain condition. The parameters will account for similar age, sex working habits etc. This will correctly identify if the contributing factor is the exposure of the agent or otherwise.
