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3 years ago

List at least three body structures that are found in both chickens and dinosaurs that show they are related.

Biology

1 answer:

Hunter-Best [27]3 years ago

3 0

Answer:

That's not all: chickens are close relations of dinosaurs, and genetic patterns in the brains of birds that learn new calls show remarkable similarities to humans. These findings stem from a project that sequenced genes from 48 bird species and then used several months of supercomputing time to analyze relationships.

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A planet has a mass of 5.97 x 1024 kg and a radius of 6.38 x 106 m. Find the weight of a 65.0 kg person at 1000 km above the sur

mote1985 [20]

Answer: The weight of the person above the surface of a planet is 635.83N.

Explanation:

To calculate the weight of a person, we use the formula:

$w=mg$ ....(1)

where,

w = weight of an object

m = mass of the person = 65kg

g = acceleration due to the gravity of the planet

For the calculation of weight, we need to first find the acceleration due to gravity and for that we use the formula:

$g=\frac{GM}{r^2}$

where, g = acceleration due to gravity = $?m/s^2$

G = Universal gravitational constant = $6.67\times 10^{-11}Nm^2/kg^2$

M = mass of the planet = $5.97\times 10^{24}kg$

r = distance of the person from the planet = $6.38\times 10^6m$

Putting values in above equation, we get:

$g=\frac{(6.67\times 10^{-11}kgm/s^2.m^2/kg^2)(5.97\times 10^{24}kg)}{(6.38\times 10^6m)^2}\\\\g=9.782m/s^2$

Putting this value in equation 1, we get:

$w=65kg\times 9.782m/s^2=635.83N$

Hence, the weight of the person above the surface of a planet is 635.83N.

7 0

2 years ago

What is the empty structure in the cytoplasm

qwelly [4]

The Golgi bodies are the empty structure in the cytoplasm. The Golgi apparatus or Golgi complex is found in most cells. It is another packaging organelle like the endoplasmic reticulum (ER). It was named after Camillo Golgi, an Italian biologist. It is pronounced GOL-JI in the same way you would say squee-gie, as soft a "G" sound. While layers of membranes may look like the rough ER, they have a very different function.

5 0

3 years ago

Sweating when it’s hot outside is a a example of which character is tics of life

nekit [7.7K]

Answer: excretion... could also be sensitivity

Explanation:

M ovement

R eproduction

S ensitivity

G rowth

R espiration

E xcretion (removal of waste such as by defacation or sweating)

N utrition

7 0

2 years ago

How long does it take to become a registered nurse after high school

patriot [66]

Answer: About 16 months to 4 years.

Explanation: Depending on the specific nursing program you enroll in. On average, becoming a registered nurse can take 3 years.

6 0

2 years ago

What is the difference between animal and plant tissues

deff fn [24]

Answer:

1) Plant tissue has a stationary phase.

2) They do not necessitate a large amount of energy

3) They have more dead cells because mechanical energy is produced.

4) They are capable of preparing their own meals

5) They are divided into two categories: meristematic and permanent tissue.

Tissue from animals:

1) They're at the locamative stage.

2) They need a significant amount of energy

3) They have a higher number of live cells.

4) They are unable to produce their own food and must rely on other organisms.

5) They are classified into four types: epithelial, connective, muscular, and nervous tissue.

7 0

3 years ago