A. Adaptive evolution is a permanent change in a trait.
Explanation: just did a test with the same question
What is not a function of the vagina?
Part of female reproductive tract
Vagina is the part of female reproductive system or tract into which the penis penetrates during sexual intercourse. The structure of vagina is soft and flexible and has lubrication and sensation generating lining. It is a canal that is elastic and muscular.
During menstrual cycle, the blood flows out of vaginal tract. Also during the child birth, the baby passes through the vagina.
Dimpled chin and free earlobes are two dominant characters in humans smooth chin and attached earlobes are recessive characters a person has the genotype Ddff. Witch statements is correct with respect to this genotype
6 Which of the following word pairs correctly completes the sentence below? Mechanical waves travel faster through _______ than through _______. A. solids, liquids B. air, liquids C. liquids, solids D. a vacuum, air
A mechanical wave is a type of wave that needs a medium to propagate or transfer its energy to.
An example of a mechanical wave is a sound wave.
Sound waves are not capable of going through vacuum.
Mechanical waves travel faster through solids than liquids because they move with the oscillations of the particles they go through and solid particles are denser and have stronger bonding forces, the mechanical waves pass through quicker than liquids that have weaker bonding forces.
Compare and contrast the frog's external anatomy of a mammal. State design advantages it has for its lifestyle
Human body has muscular partition called as diaphragm to separate abdomen by chest frog lacks it.
Frogs do not have outer ear which mammals have.
Frog is an amphibian
Integumentary system to protect skin from external environment., mammals have glandular skin.
skin to inhabit water habitat skin has glands, hair, mammary gland and fur
Frogs have two forelimbs and two hind limbs. mammals have 4 forelimbs.
presence of cloaca for waste, sperm and egg release while mammals have anus, urethra and genital openings for the purpose.
ADVANTAGES OF EXTERNAL FEATURES IN LIFESTYLE:
The frogs body id designed streamlined for swimming as presence of flat skull, no neck and small waist.
The skin allows exchange of gases and allows them to breathe through skin.
Powerful hind legs assist them in jumps.
they have 3 eyelid membrane that helps them see in water or land.