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ICE Princess25 [194]
3 years ago
5

The main reason that it's important to test only one variable at a time is so that

Biology
1 answer:
Bas_tet [7]3 years ago
3 0
Your experiment has an accurate outcome. The only variable that should be changing is what you have already determined to be the independent variable. All other variables must be controlled (sometimes called constant) in order to preserve the accuracy of the experiment and ensure that the only thing impacted the change in the dependent variable is directly caused by the independent variable.
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An earthquake is the saking and trembling that results from movment of rock benath earths surface earthquakes most commonlz occu
serg [7]
This is the case since earthquakes form directly from tectonic plates. It happens when 2 tectonic plates pass by each other and causes fiction from the bumby sides of the plates
8 0
3 years ago
What are the different ways fungal spores can be dispersed?
stealth61 [152]

Answer:

Explanation:

The spores of some fungi are dispersed in water or on the surface of water. The chemical composition of the wall of these spores makes them "non-wettable" so they won't sink. The spores are carried along on the surface of the water like little boats. Water in the form of raindrops can disperse spores in a different way. While gravity is not a primary means of spore dispersal, evolutionary adaptations have been required of many fungi to overcome gravitational effects for effective spore dispersal. SPORE DISPERSAL BY WIND Dispersal of fungal spores by wind is by far the most common method for terrestrial fungi.

4 0
3 years ago
Many of the organisms in the ocean are nutrient-limited. if you wanted to investigate this phenomenon, one reasonable approach w
Mamont248 [21]
None of the provided options are reasonable. <span>comparing nutrient concentrations between the photic zone and the benthic zone can not tell you whether differences in concentrations between the photic and benthic zone are due to uptake by phytoplankton or because nutrients are sinking to the sea bottom and ocean stratification is preventing mixing.  The approach of c</span><span>ontrasting nutrient uptake by autotrophs at different locations under different temperatures would not provide useful information on limiting nutrients. but rather uptake rates at different temperatures.  It is likely that e</span>xperimentally enriching some areas of the ocean and compare their productivity to that of untreated areas can provide an indication of limiting nutrients, but this is not advisable, as it would have to be done on a large scale, and one cannot be sure of the ecological consequences. Also, because it would not be a controlled experiment, other factors could create 'noise' in the data. The last option, <span>observe antarctic ocean productivity from year to year to see if it changes, also does not help, as there is no correlation between nutrient concentrations using this approach. The best approaches would be either the last approach, but with the additional monitoring of nutrient concentrations, or under a controlled laboratory experiment.</span>
5 0
3 years ago
Identify the parts of a leaf that make up it's transport system
Rashid [163]
Blade
Thin, flattened section of a plant leaf that collects sunlight

Petiole
Thin stalk by which a leaf blade is attached to a stem

Mesophyll
Specialized ground tissue that makes up the bulk of most leaves; performs most of a plant's photosynthesis

Palisade Mesophyll
Layer of tall, column-shaped mesophyll cells just under the upper epidermis of a leaf

Spongy Mesophyll
Loose tissue beneath the palisade layer of a leaf

Stoma
Opening in the underside of a leaf that allows carbon dioxide and oxygen to diffuse into and out of the leaf

Guard Cell
Specialized cell in the epidermis of plants that controls the opening and closing of stomata by responding to changes in water pressure

Transpiration
Loss of water from a plant through its leaves

(Got this from my textbook so here)
3 0
3 years ago
Darwin suggested looking at a species’ close relatives to learn what its ancestors may have been like. how does his suggestion a
m_a_m_a [10]
Phylogenetic bracketing is a technique for surmising utilized as a part of organic sciences. It is to deduce the probability of obscure attributes in life forms in view of their position in a phylogenetic tree. One of the primary utilizations of phylogenetic sectioning is on wiped out creatures, known from fossils.
3 0
3 years ago
Read 2 more answers
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