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ki77a [65]
3 years ago
13

Pollution stays in the area where it is produced. a. True b. False

Biology
1 answer:
Studentka2010 [4]3 years ago
6 0
False, because if it is air pollution, the polluted particles diffuse in the air and then travels. In addition, for noise pollution, sound waves travel!
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Chromosomes are found in the (i)__________ of every living cell. They can be seen by (ii)__________ a cell that is about to (iii
rusak2 [61]

Answer:

Explanation:

i) nucleus

ii) mitosis

iii) split

iv) pairs

v) number

vi) 46

vii) 23

viii) 7

ix) 127

x) arm

7 0
2 years ago
Which of the following features did whales possibly inherit from a four-legged ancestor?
pishuonlain [190]

Answer:

2. Hip bones

Explanation:

More than 40 million years ago, whales had ancestors who walked on land. Even now, they have a feature they inherited from them - hip bones. Scientists used to think that they are vestigial, i.e. that they lost their function. However, recently they discovered that these bones help whales (and other marine mammals who have them, such as dolphins) maneuver better mating.

Whales developed the rest of the listed features later, when they became marine animals. This is why they are incorrect.

8 0
2 years ago
Veins have valves which allow blood to flow only in one direction. Arteries do not have valves. Yet the blood flows in one direc
Valentin [98]

Answer:

Arteries carry oxygenated blood away from the heart. Veins carry the blood back to the heart. Veins contain valves that ensure blood flows in only one direction. Arteries don’t require valves because pressure from the heart is so strong that blood is only able to flow in one direction.

Explanation:

8 0
3 years ago
Read 2 more answers
Why is long loose hair dangerous in a lab? Select all that apply.
Goshia [24]

Answer:

it can get caught in equipment, catch fire or fall into chemicals

Hope This Helps :D

7 0
3 years ago
If a homozygous black bull is mated with a homozygous white cow and the calf is gray, this could be an example of ___________. H
givi [52]

Answer:

Incomplete dominance

Co-dominance

Explanation:

Gregor Mendel discovered the principles that governs heredity, in which one of them is that an allele called DOMINANT allele, is capable of masking the expression of its variant allele called RECESSIVE allele in a heterozygous state. However, there has been genetic scenarios contrary to this his LAW OF DOMINANCE.

One of those Non-mendelian pattern of inheritance is a phenomenon called INCOMPLETE DOMINANCE, where an allele does not mask the expression of another completely, instead their combined state produces a third intermediate phenotype that is different from both parents. This is the case of the homozygous black bull mated with a homozygous white cow to produce a grey calf. The grey phenotype is an intermediate phenotype of both the black and white colours that forms due to incomplete dominance.

Another genetic scenario is called CO-DOMINANCE, where one allele is neither dominant nor recessive to the other allele, but instead both phenotypes becomes simultaneously expressed in the heterozygous offspring. In this case, the black bull and white cow were mated to form a heterozygous calf with both black and white spots.

3 0
3 years ago
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