Which statement is an example of an observation the student could have made

Biology

1 answer:

docker41 [41]2 years ago

8 0

If you gave a little more information i could help you... which statements? is this a multiple choice?

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Please help me with this

zlopas [31]

D : the number of generations in one population

6 0

2 years ago

How much force would is required to stop a 1200kg car in 2 seconds if the car is traveling at 22 m/s

Shalnov [3]

Force required = F = ?

mass of the car = m = 1200 kg

initial velocity of the car = Vi = 10 m/sec

final velocity of the car = 0

time required to stop the car = t = 20 sec

Using Newton`s 2nd law of motion;

F = ma ………………………(1)

as a = Vf - Vi / t , put this value in equation (1)

F = m ( Vf - Vi /t ) ………………(2)

F = 1200 ( 0 - 10 /20) = - 600 N

here Negative sign shows that external force is acting in opposite direction of the motion to bring it to rest.

we can also calculate this force by using the relation

Rate of change of momentum = net force acting on the object …………(3)

m Vf - m Vi / t = net force acting on the object

m (Vf - Vi / t) = F

1200 ( 0 - 10 /20) = - 600 N = F

so, net force acting on the object =F = - 600 N

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2 years ago

Science Grade 8

cluponka [151]

By using a genetic diagram or a punnett square, we can show the the result of a cross between RR and rr.
The result of the genotypes should all be Rr.
This means all their offsprings should have the dominant trait being expressed.
Therefore, the percentage to this should be 100%.
The picture above is an example of using a punnett square finding the possible genotypes of the offsprings.

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2 years ago

Describe three adaptive advantages of the mammalian autonomy

natita [175]

1. Well developped offspring, and portable baby food despencing. Mamalian young are generally quite well developed when they are born, and the parent does not need to find any specific types of food for the new born since the mother already provides te perfect nutrition.

2. Internal heating allows mammals to remain quick and active in cold climates.

3. Fur is really effective and cheap to produce.

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Two species of fish have been found together in five different lakes. The larger, bottom-dwelling species feeds on large prey cl

Irina-Kira [14]

Answer:

a. allopatric speciation.

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2 years ago