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cricket20 [7]
2 years ago
14

Did trilobites and dinosaurs live at the same time? What is your evidence?

Biology
1 answer:
IrinaVladis [17]2 years ago
8 0

Answer:

No because Trilobites are older because they are in the deepest rock layer and the dinos aren't plus Two species of trilobites found in the Southwestern United States. Trilobites went extinct 250 million years ago, long before the appearance of the first dinosaurs.

Explanation: because i love talking about fossils

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Which planet is the moon thought to have come from originally?
Lisa [10]

The Moon is thought to have come from the Earth. In 1975, the giant impact hypothesis was put forward. This suggests that the Earth was hit by a planet about the size of Mars around the time of the formation of the solar system approximately 4.5 billion years ago, and the impact caused part of the outer layer of the Earth to spin off and form what is now the Moon.

3 0
3 years ago
List the cardiovascular and cardiac features unique to the fetus and describe their role in fetal circulation; explain the fate
STatiana [176]

Cardiovascular features unique to the Fetus:

Fetal circulation is characterized by low systemic vascular resistance (SVR) with high systemic blood flow and high pulmonary vascular resistance with low pulmonary blood flow.

<h3>What is fetal circulation?</h3>

The embryonic circulatory system directs blood that needs oxygen through three shunts, or microscopic tunnels. These shunts are intended to avoid forming organs like the liver and lungs while the fetus is still in the womb.

The foramen ovale, which carries blood from the right atrium of the heart to the left atrium, and the ductus arteriosus, which takes blood from the pulmonary artery to the aorta, are the two shunts that bypass the lungs.

Through the placenta, the mother's blood supplies the fetus with nutrition and oxygen. The enhanced blood divides into three branches as it travels via the umbilical cord to the liver.

Learn more about fetal circulation with the help of the given link:

brainly.com/question/7191531

#SPJ4

7 0
1 year ago
4b. why would the vena cava be classified as a vein? all veins carry blood back to the heart, except for the pulmonary vein. the
padilas [110]
The answer is that <span>all veins carry blood back to the heart, except for the pulmonary vein. the vena cava empty into the right side of the heart, so they technically bring blood to the </span>main atrium.
3 0
3 years ago
Pretend you’re a researcher in charge of conducting new research on the flu research on the flu virus. Identify four scientific
borishaifa [10]

Answer:

Explanation:

A scientific researcher performs scientific methods to answer any natural process. The researcher will follow the protocol of a scientific method which includes: observe the natural phenomenon, ask related questions, suggest a hypothesis, perform the experiment and suggest answers.

In the given question if the researcher has to study about the flu virus, the possible questions he would ask will be:

1. The life cycle of the flu virus.

2. Effect of the virus on the life of an organism.

3. The mechanism used by the virus to replicate and to infect any organism.

4. Molecular mechanism of a virus.

3 0
3 years ago
Is anyone good at science please help for brainliest.
Dafna11 [192]

Answer:

eukarya

Explanation:

so long as that stands for eukaryotic

fungi is eukaryotic

other 2 are multicellular, and therefore eukaryotic

if u don't like the first explanation, the second one is process of elimination

archaebacteria is a kingdom, so it can't be that, same with plantae.

fungi isn't a bacteria so it can't be that either

only option remaining is eukarya

6 0
3 years ago
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