Seleciona a opção correta. Afirmações:

I. Para evitar perdas de calor ocorre piloereção, resultante da contração dos músculos

eretores do pelo.

II. A vasoconstrição permite diminuir as perdas de calor para a superfície corporal.

III. A contração rápida da musculatura origina tremores, o que reduz a produção de

calor interno.

Opções:

(A) Todas as afirmações são verdadeiras.

(B) A afirmação I é verdadeira; as afirmações II e III são falsas.

(C) As afirmações I e II são verdadeiras; a afirmação III é falsa.

(D) A afirmação III é verdadeira; as afirmações I e II são falsas.

In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.

When plants use sunlight to make food, the energy of sunlight is