At the end of which era did the dinosaurs become extinct?A. Jurassic
B. Mesozoic
C. Paleozoic
D. Cenozoic

Answer;

-Antarctica is polar, and is turned away from the sun for about half the year. Panama, which is equatorial, faces the sun all year.

Explanation;

-Antarctica is the location of the South Pole. It is the southern-most point on Earth. Panama, on the other hand, is near the equator.

-The south pole is colder than the Equator because they receive oblique sun rays(low insolation) and direct sun rays(high insolation) at the equator. This causes variation in intensity of insolation which further influences heat energy received from the sun.

Answer:

acid rain has a pH value of 4.0.

Explanation:

so less than 7

Answer:

This means the dolphin is an vertebrate.

Explanation:

• Gill pouches are the structures which are present in all vertebrates in the embryonic stages while it is present in fishes and amphibian in later life also.
• It is thought to be the ancestral structures present in vertebrates. These pouches are then converted to lungs in the later life. For the water animals they are used for respiration.
• They are actually the muscular walls containing respiratory lamellae on its inner side.
• Hence in dolphin they are signs that dolphin is an vertebrate.

Answer:

Dolphins having gill pouches would mean that dolphin embryos go through a fish phase during development. Dolphins are closely related so dolphins should go through a fish phase.

Explanation:

Answer:

He is right, it would be called a clone

Explanation:

Final answer:

The student was likely investigating the distribution of homework nights during a week, and should use a chi-square test of independence to analyze the data.

Explanation:

The student was most likely investigating the nights during which the highest number of students do the majority of their homework with equal frequencies during a week. This question relates to analyzing the distribution of homework nights throughout the week.  To test this hypothesis, the student should use a chi-square test of independence, which compares the observed frequencies with the expected frequencies.

The chi-square test is a statistical method used to determine if there is a significant association between categorical variables. It compares the expected and observed frequencies in a contingency table, assessing whether any deviations are due to random chance or reflect a true relationship.

Learn more about homework nights distribution here:

brainly.com/question/34306930

#SPJ2

Answer:

Which is faster, visual or auditory reaction times?

Answer:

the answer is A and C

Explanation:

Answer:

The answer to your problem would be to choose the first answer, & the last answer.

Explanation:

the atmosphere blocks out most of the sunlight, & blocks off almost all of the U.V. radiation.

Your welcome.

Best of luck to ya in your school,

James Lester.