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Brums [2.3K]
3 years ago
12

When are fossil fuels harmful to the environment?(No links please!!)

Biology
2 answers:
enyata [817]3 years ago
6 0

Explanation:

Option first is the correct one

Genrish500 [490]3 years ago
4 0

Answer:

A.when their energy is harnessed by humans

Explanation:

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9 times 10 to second power is ___ times grater than 3 times 10 to the -2
dedylja [7]
(9• 10^2)•? > 3•10^-2
We can rewrite the the firsts part to something equivalent to make it look like the second part of inequality.

3•3•10^2. • 10^-2. •10^2 > 3•10^-2

Use commutative property of multiplication

(3•10^-2)(3• 10^2. •10^2) > 3•10^ -2
(3• 10^-2)•(3• 10^4) > 3•10^ -2

So the answer is 3•10^4 greater
8 0
4 years ago
The disease ______________ is characterized by destruction of cns myelin sheaths and the formation of hardened scars. alzheimer'
strojnjashka [21]
This disease is Multiple Sclerosis.
hope this helps!
5 0
4 years ago
Ecologists are interested in quantifying different kinds of biodiversity. In below study outlined here, which kind of biodiversi
weqwewe [10]

Answer:

d. Species diversity

Explanation:

The species diversity can be measured by:

  • Species richness: Refers to the number of species are inhabiting a defined area.
  • Species abundance: Describe the distribution of the species abundance.

Species richness is the number of species present in a sample, within a community, habitat or microhabitat, ecosystem, landscape, region or any well-defined spatial unit. It is a metric for measuring biodiversity which simplicity and easy interpretation make it a standard metric.  It is the simplest and straightforward measure of biodiversity. It is just a count of species, with no need for abundance data. In some cases, this can be the cause of criticism, as it ignores information about the species-abundance distribution.    

8 0
3 years ago
What can be inferred about a petrified log? the wood needed long ages before it could petrify the tree laid on the surface for l
RideAnS [48]

Answer:

the petrified log looks like the original tree.

Explanation:

A tree to be petrified first needs to be buried. An element laying on the surface can not be petrified because it is exposed to many different factors (such as<em> organisms, microorganisms, climatic conditions</em>, etc.), that affect the petrification process. So, in the case of a fallen tree, first, it needs to be covered by many sedimentary layers. Once it is underground, it also needs the presence of underground water and minerals. Water replaces the original organic material with minerals (silica, calcite, and pyrite). This replacement process results in the conversion of the woody material into a fossil of the original material. Very often, the tree details are so preserved that the fossil looks exactly like the original trunk.

Depending on the preservation degree, a fossil can be useful for different studies about the past.

6 0
3 years ago
Bottom-up processing is to top-down processing as _____ is to top-down processing as ______ is to ______.
svetoff [14.1K]

Answer;

-Data-driven processing; conceptually driven processing

Bottom-up processing is to top-down processing as  data-driven processing is to conceptually driven processing;

Explanation;

-Sensation and perception are two separate processes that are very closely related. Sensation is input about the physical world obtained by our sensory receptors, and perception is the process by which the brain selects, organizes, and interprets these sensations.

-There are two approaches to understanding the process of perception. These are the top-down processing and the bottom-up processing.

-Top-down processing is defined as the development of pattern recognition through the use of contextual information. In the bottom-up processing approach, perception starts at the sensory input, the stimulus. Thus, perception can be described as data-driven.

5 0
3 years ago
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