Dinosaurs, birds, early mammals and plants were major life-forms that existed in the____________.a. Mesozoic Era
c. Cenozoic era
b. Paleozoic era
d. Devonian era

Answers

Answer 1
Answer: The organisms that are presented in this item: (1) dinosaurs, (2) birds, (3) early mammals, and (4) plants existed during the Mesozoic Era. This is the type from 248 million to 65 million years ago, lasting for about 180 million years. Thus, the answer to this item is letter A.
Answer 2
Answer: Dinosaurs, birds, early mamals all existed in the Mesosoic Era. The Mesosoic Era is a period in geologic that began about 225 million years ago and ended about 65 milion years ago. The Mesosoic ended with the asteroid impact even that caused the extinction of the dinosaurs.

Related Questions

Which of the following bones is not part of the appendicular skeleton? a) Femur b) Humerus c) Clavicle d) Sternum
Endocrine glands are responsible forA. controlling body temperature. B. regulating body activities. C. stimulating an immune response. D. keeping the brain bathed in fluid.
Which of the following statements is true?A. Fossils are frequently found in metamorphic rock.B. Igneous rocks form from the cooling and crystallization of magma.C. Extrusive igneous rocks, found in the Earth's lithosphere, are not subject to weathering.D. Sedimentary rocks are formed as a direct result of chemical weathering.
Plants in the division anthophyta appeared during the ___________________. a. Paleocene b. Cretaceous c.Triassic d. Jurassic
Which of these characteristics is common only at the embryonic stage of fish and humans, and is suggestive of a common ancestor between the two? A) presence of lungs B) presence of a tail C) presence of gill slits Eliminate D) presence of a vertebral column

Describe some ways that human activities are affecting aquatic ecosystems. Propose strategies that individuals can use and governments can implement that would prevent or reduce these human impacts.

Answers

Answer:

Humans are heavily polluting the waters in many areas with chemicals, medicine (for people), and garbage. A way that the government can help stop this issue is to have groups do routine cleanings of natural bodies of water along with prohibite the use of disposable items in the area like cups and/or bags.

Explanation:

1. What are some of the natural disasters that Mexico experiences? a. tsunamis
b. earthquakes
c. blizzards
d. A and B only
2. Which of the following are effects of "El Nino"?
a. hurricanes
b. floods
c. droughts
d. A and B only
e. A, B, and C

Answers

1. The right answer is d. A and B only.

On September 8, 2017, the earth shook in Mexico on the night of Thursday to Friday. An earthquake measuring 8.2 on the Richter scale hit the south of the country off the coast of Chiapas state, according to the US Geospatial Monitoring Center (USGS). The shock was felt as far as the capital, Mexico City.


2. The right answer is e. A, B, and C.

El Niño, and its La Niña counterpart, are large-scale oceanic phenomena of the equatorial Pacific Ocean, affecting the wind regime, sea temperature, and precipitation. El Niño and La Niña correspond to the two opposite phases of the coupled ocean / atmosphere phenomenon called ENSO (El Niño / Southern Oscillation).

Originally, the name El Niño was attributed by Peruvian fishermen to the small invasion of hot water that occurs every year along the coasts of Peru and Ecuador around Christmas - hence its name: in Spanish, El Niño means the child Jesus. By extension, the climatic phenomenon corresponding to the increased warming of surface waters near the coast of South America is now called El Niño. We know that it is linked to a cycle of changes in atmospheric pressure between the east and west Pacific, coupled with a cycle of ocean current along the equator.

Only ENSO has such a marked global impact. The other two ocean basins, Indian and Atlantic, are too small to allow such an important coupling between atmospheric and oceanic circulation, even if they also undergo deep water upwelling and trade winds.

1.) Some of the natural disasters that Mexico experiences are tsunamis and earthquakes. The correct answer is D. 

2.) The effects of "El Nino" are hurricanes, floods, and droughts. The correct answer is E. 

Which process allows organisms to keep internal conditions relatively constant despite changes in external conditions? Homeostasis



Hibernation



Hypothermia

Answers

Answer:

Homeostasis

Explanation:

Walter Cannon elaborated the concept of homeostasis from the investigations

carried out by Claude Bernard, creator of Experimental Medicine.

The concept of homeostasis, as Cannon formulated it in his capital work,  the Wisdom of the Body implies a dynamic equilibrium, maintained interactively by the constant dialectic between internal kinetics and  variations of the external environment. Homeostatic regulation is set to different  levels, from molecular-subcellular to suprapersonal or social, through the  global consideration of the individual as a whole . The study of isolated aspects of this systematic organization must give us, for  strength, a partial vision. Human functioning is always influenced by a  hierarchically organized activity of suprasystems and related subsystems.

Homestasis is correct.

What are two ways in which heat is transported in the biosphere?

Answers

The answer is by both convection and radiation. Direct sunlight penetrates to the surface, heating air particles and the ground and water. As these particles/molecules heat up, the heat spreads around AND rises. What does this have to do with the biosphere, you ask? Organisms are directly warmed by sunlight, and each other (consumers) to stay warm as well. Please give me "best answer"!

The innermost layer of an artery or vein is called the __________.

Answers

Artery and veins are the blood vessels responsible to carry oxygenated and deoxygenated blood respectively. The innermost layer of these blood vessels is referred to as tunica interna.

What are blood vessels?

Blood vessels are responsible for circulating blood from heart to other body parts and vice-versa.

These carry oxygenated blood from heart to other cells and deoxygenated blood from cells to lungs and then to heart.

These are of two types, namely artery and vein.

The innermost layer of an artery or vein is referred to as the tunicainterna.

Thus, the correct answer is tunica interna.

For more details regarding blood vessels, visit:

brainly.com/question/4601677

#SPJ2

the innermost layer of an artery or vein is called the tunics.

Congenital hypothyroidism is most often the result of _____, or underdevelopment of the hypothyroid gland.

Answers

Answer:

Hypoplasia

Explanation:

Congenital hypothyroidism is most often the result of hypoplasia. Hypoplasia is the process of incomplete development of an organ or tissue in the body. Congenital hypothyroidism is insufficient thyroid hormone production in newborn infants. The underdevelopment of thyroid gland, occurs when the fetus is still in the womb and can be seen in everywhere from tooth enamel to the corpus callosum of the brain, heart, ovaries, various muscle groups, and other regions.

Congenital hypothyroidism is most often the result of thyroid dysgenesis or underdevelopment of the hypothyroid gland.

Congenital hypothyroidism can occasionally also be brought on by a problem with how thyroid hormone is made or by a lack of iodine during fetal development.

Genetic changes or other factors that obstruct normal thyroid gland development can lead to thyroid dysgenesis. TSH receptor gene, PAX8 gene, and NKX2-1 gene mutations are a few genetic changes linked to congenital hypothyroidism.

Mothers who do not get enough iodine, pregnant women who are exposed to radiation, and people who are exposed to certain drugs or chemicals are other causes that may cause thyroid dysgenesis.

Learn more about Congenital hypothyroidism

brainly.com/question/14724624

#SPJ4