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kirza4 [7]
3 years ago
9

A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particularly hot,

dry period that causes a snake species to decline. What could the biologists hypothesize about the roles of theses two species?
A:The lizard preys on the snake
B:The lizard is a parasite of the snake
C:The snake and the lizard use the same limiting recourse
D:The snake is a keystone species in the ecosystem Please help me its for a huge test and I need the answer!
Biology
2 answers:
forsale [732]3 years ago
8 0

The answer is D. The snake is a keystone species in the ecosystem.

bekas [8.4K]3 years ago
3 0
Based on the description of events, being that the lizard population appears to increase as soon as the snake population decreases, it appears that the snakes prey on the lizards. This suggests that the snake is a keystone species. A keystone species is one that has a dramatic effect on maintaining the balance of an ecosystem. As soon as the snake population decreases, major changes occur to the ecosystem, such as the lizard population increasing.

Therefore, the answer is D: <span>The snake is a keystone species in the ecosystem.</span>
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7 0
2 years ago
Atomic radius blank as the atomic number increases across the period.
insens350 [35]

Answer:

The atomic radius of atoms generally decreases from left to right across a period. ... Within a period, protons are added to the nucleus as electrons are being added to the same principal energy level. These electrons are gradually pulled closer to the nucleus because of its increased positive charge

Explanation:

hope this helped

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3 years ago
Use this phylogenetic tree and your knowledge of cladistics to determine the relationships between these species.rank the specie
Lesechka [4]
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Thank you for your question. Please don't hesitate to ask in Brainly your queries. 
8 0
3 years ago
A recent study of ecological footprints concluded that ______. A. Earth's carrying capacity would increase if per capita meat co
zhenek [66]

The correct option is (D) The ecological footprint of the United States is large because per capita resource use is high.

<h3>What is ecological footprint?</h3>
  • The Global Footprint Network advocates using the ecological footprint to determine how much nature is required to support a certain population or economy.
  • The ecological footprint accounting system tracks how much nature is being used and produced.The Ecological Footprint calculates the total productive areas for which a population, a person, or a product competes on the demand side.
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  • The biocapacity of a city, state, or country, on the supply side, measures how productive its ecological resources are (including cropland, grazing land, forest land, fishing grounds, and built-up land).  
  • These regions can also be used to absorb the garbage we produce, particularly our carbon emissions from burning fossil fuels, especially if they are left unharvested.

Learn more about the ecological footprint with the help of the given link:

brainly.com/question/14441911

#SPJ4

4 0
1 year ago
NO G00GLE PLEASE &lt;3
spin [16.1K]

Answer: DNA is found in every cell of our body– except red blood cells (no nucleus). Genes are a segment of DNA. Our genes are the blueprint for our biology.

Explanation:

7 0
2 years ago
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