BIOLOGY MIDDLE SCHOOL

Which of these statements is true about adaptive evolution? Adaptive evolution is a permanent change in a trait.


Adaptive evolution is a temporary change in a trait.


Adaptive evolution is a fluctuating change in a trait.

Answers

Answer 1
Answer: In adaptive evolution, the change occurs due to a change in the genetic make-up by mutations.
Therefore, adaptive evolution is a permanent change in a trait and it allows a population to survive in unsuitable environmental conditions.
Answer 2
Answer:

Answer:

A.   Adaptive evolution is a permanent change in a trait.

Explanation: just did a test with the same question


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HIGH SCHOOL

What is not a function of the vagina?

Answers

Answer:

Part of female reproductive tract

Explanation:

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.  

HIGH SCHOOL

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

Answers

I believe it’s Incomplete Dominance
MIDDLE SCHOOL

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

Answers

Answer:

Solids

Liquids

Explanation:

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.

Solids,  liquids. hope that helped
HIGH SCHOOL

Compare and contrast the frog's external anatomy of a mammal. State design advantages it has for its lifestyle

Answers

Human body has muscular partition called as diaphragm to separate abdomen by chest frog lacks it.

Explanation:

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.

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