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Alisiya [41]
3 years ago
9

The demand on the Earth's lithosphere is dramatically increasing. Why should we look for alternative sources of energy other tha

n just relying on fossil fuels? A) Fossil fuels are non-renewable and exhaustible and their combustion causes air pollution. B) Fossil fuels are renewable and plentiful, but their combustion causes air pollution. C) Fossil fuels are plentiful, so alternative sources are not needed. D) Fossil fuels are not profitable for energy companies.
Biology
2 answers:
Artist 52 [7]3 years ago
4 0

Its A boiiiiisssssss

:3

kaheart [24]3 years ago
3 0
The answer to your question is A.
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Which of these is a distinguishing biotic feature of the Sonoran Desert? A. Saguaro cacti B. Maple trees C. Dung beetles D. Deco
miskamm [114]
The correct answer is A. Saguaro Cacti, with the scientific name <span>Carnegiea gigantea, </span>which is very significant biotic feature to the Sonoran Dessert's ecosystem. The craziest fact about it is that it can grow up to 40 feet tall! The Sonoran Desert is a North American dessert, also. Some other critical biotic features of this desert include joshua trees, rattle snake, and red-tailed hawk. 

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To participate in a designated driver program and be provided with complimentary nonalcoholic drinks you must meet certain crite
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3 years ago
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The map shows the most active earthquake areas in dark shading. Identify one geologic event, other than an earthquake, that may
Ahat [919]
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In a plant, leaf color and leaf shape are controlled by two linked genes Leaves of the wild-type plant are red. A recessive muta
Brrunno [24]

Solution :

Red is dominant over the white leaves and pointed is dominant over smooth.

Red = R ,    white = r

Pointed = P ,   smooth = p

Red, pointed x white,smooth ------ Parents

RRPP                 rrpp

RP                      rp  ----------------- Gametes

         RrPp    -------- $F_1$

  (red, pointed)

When this $F_1$ is test crossed,

RrPp  x  rrpp     ----  $F_1$ test cross

Gametes   → rp

RP ---------- RrPp - red, pointed - 36 parental type

Rp ---------- Rprp - red, smooth - 14 re- combination

rP ----------- rrPp - white pointed - 10 re- combination

rp ----------- rrpp - white, smooth - 40 - parental type

                                    Total =   100

As this ratio is deviating from 1:1:1:1, it indicated the two genes are linked.

Linkage strength = percentage of crossing over = map distance between the genes.

Percentage crossing = recombination frequency = percentage of recombination.

Recombination frequency $=\frac{\text{total no. of recombination}}{\text{total no. of progeny}}\times 100$

                                         $=\frac{14+10}{100} \times 100$

                                         = 24 %

                                        = 24 map units

4 0
3 years ago
The ______ becomes the placenta. a. yolk sac b. chorion c. amnion d. allantois
LekaFEV [45]
I think the correct answer would be A. The yolk sac becomes the placenta. It is membranous sac that is attached to the embryo. It provides all the nutrition and the blood cells needed by the embryo. It is also called the umbilical vesicle.
3 0
3 years ago
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