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Aleonysh [2.5K]
3 years ago
7

When we learned about science in context, we learned testing ideas is the heart of science and they go through a specific cycle

that allow for ideas to be effectively tested. What are the 3 ways a scientist test ideas? Select all that apply.
A. exploration and discovery
B. benefits and outcomes
C. articles and theories
D. community analysis and feedback
Biology
1 answer:
bagirrra123 [75]3 years ago
6 0

Answer:

the answer to that question is D

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What scientific principle causes the different layers of the earth?
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Density

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B. They last much longer than traditional lightbulbs

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3 years ago
If 2 parents-both heterozygous for particular traits in a dihybrid cross are mated, how many different phenotypes will result in
andrezito [222]
<span>If the parents are both heterozygous for </span><span>particular traits their genotype would be: AaBb x AaBb ( this cross would be the F1 generation while the P generation is the one that originated the parents).
This cross would result in the folowing genotypes:
AABB
AaBB
Aabb
aaBB
aaBb
aabb
Dominant for A and B: 9/16
Dominant for A but recessive for B: 3/16
Recessive for A but dominant for B: 3/16
Recessive for A and B: 1/16
 ratio: 9:3:3:1
To answer you the possible phenotypes is difficult because your question is missing information about what each gene does, but I know it would be 4 different phenotypes.
</span>

8 0
3 years ago
A steel bar has a mass of 4,000 kilograms and a volume of 0.5 cubic meters . Calculate its density. Write your answer as a whole
mixer [17]

The equation for density is:


D=\frac{m}{V}


where the mass is in grams and the volume is in cm^{3}.


We are given 4,000 kilograms, and we know that there are 1,000 grams in 1 kilogram, so we need to multiply to convert to grams:


4,000*1,000=4,000,000g


We are also given 0.5 m^{3}, and we need to convert to cm^{3}. We know that there are 100 cm in 1 m, and since we are talking about cubic volume, we must also raise 100 to the 3rd power: 100^{3}=1,000,000cm. So now we know that there are 1,000,000 cm^{3} in 1 m^{3}. We need to then multiply 1,000,000 cm by 0.5 in order to find the volume that was given in the question:


1,000,000*0.5=500,000cm^{3}


So now that we have the correct units, let's plug them into the equation:


D=\frac{4,000,000g}{500,000cm^{3}}


D=\frac{8g}{cm^{3}}


So now we know that the density is 8g/cubic centimeter.

3 0
3 years ago
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