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Brut [27]
2 years ago
10

When CFCs are exposed to high levels of UV radiation, what occurs? A. The compound breaks down into nitric oxide and ozone. B. A

ll of these C. A chlorine breaks off and forms a free radical. D. They become ionized and stick together in clumps that become part of smog.
Biology
1 answer:
GaryK [48]2 years ago
7 0

Answer:

C. A chlorine breaks off and forms a free radical

Explanation:

When CFCs are exposed to high levels of UV radiation in the atmosphere, the CFC molecule breaks into chlorine and forms free radicals.

These free chlorine radicals then reacts with ozone molecules and breaks the ozone atom (O3) to form chlorine monoxide and oxygen (O2) molecule.

CFCs are main cause of ozone depletion in the atmosphere.

Hence, the correct option is "C".

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What feature of both true mosses and ferns makes it most surprising that they can survive for many generations in dry deserts? U
FromTheMoon [43]

Answer:

The correct answer will be option-A

Explanation:

Desert biomes are characterised by the presence of the arid conditions or with few or less amount of rainfall.

The plant groups called the bryophytes and pteridophytes are dependent on the water for their fertilization which allows completing their life cycle.

In the desert conditions provided in the question, the mosses and ferns survived for many generations as these plant groups produced sperms with flagella which helped the sperms to swim in the water provided by the 10-inch rainfall per year and reach the female gamete and fertilize the egg cell.

Thus, option-A is the correct answer.

6 0
1 year ago
If natural selection has no foresight, how can it explain features that seem to prepare organisms for future events? for example
Nezavi [6.7K]

The genes in a population give forth the genetic variability across a population (genotypes). In addition, occasional mutations of these genes in a population increase this genetic variability. Hovever, natural selection only favours reproduction of individuals with genes that are favourable in the environment/habitat. Therefore, natural selection has no foresight but is rather pegged on being an ‘opportunistic’ process.


4 0
2 years ago
Match the following vocabulary words. 1.ciliary musclesA transparent liquid which is located between the cornea and iris. 2.opti
klio [65]

Answer:

1. Aqueous humor.

2. Ciliary muscles.

3. Cone.

4. Cornea.

5. Iris.

6. Optic nerve.

7. Photoreceptor.

8. Retina.

9. Rod.

10. Sclera.

11. Vitreous humor.

Explanation:

A sensory system can be defined as components of the central nervous system (CNS) which comprises of the brain, neural tissues or pathways and sensory neurons responsible for sensory functions, perception and processing sensory informations such as sound, light, heat, etc.

Basically, the central nervous system (CNS) interprete the neural signals that are generated from stimuli that are detected by the sensory system. The five (5) main sense organs in the sensory system are: skin, tongue, ears, nose and the eyes.

An eye can be defined as a specialized organ of sight with the capability to receive visual images that are subsequently transduced into neural signals and relayed to the brain for processing and interpretation. Some of the components of the human eye matched with their description are;

1. Aqueous humor: a transparent liquid which is located between the cornea and iris.

2. Ciliary muscles: muscles attached to the lens to change its shape.

3. Cone: a photoreceptor cell which functions best in bright light. It detects color.

4. Cornea: the transparent portion of the sclera at the front of the eye.

5. Iris: a special part of the choroid layer composed of colorful tissue.

6. Optic nerve: the nerve connecting the eye to the brain.

7. Photoreceptor: specialized cells located in the retina that receive light images.

8. Retina: a delicate light-sensitive membrane covering the inside of the eyeball.

9. Rod: a photoreceptor cell which is sensitive to dim light, but detects no color.

10. Sclera: a fibrous material surrounding the eye to give it shape.

11. Vitreous humor: a transparent jellylike substance filling the eyeball.

8 0
1 year ago
Read 2 more answers
The burrowing owl is found in dry, open areas such as grasslands, prairies, savannas, deserts, farmlands, golf courses, and othe
kolezko [41]

Extinction would be the least likely outcome

8 0
1 year ago
Read 2 more answers
Butterflies usually are identified by the colors and patterns on their wings. Butterflies have four wings: The two wings near th
mafiozo [28]

Answer:

Colias Philodice

Explanation:

Following the dichotomous key:

The hindwings are rounded so it says to go to the 3. The options are orange with black wings or yellow with black wings. It has yellow on the wings so that means it is Colias Philodice.

Hope this helps!!! :)

5 0
1 year ago
Read 2 more answers
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