Answer:
Chemoautotrophs.
Explanation:
Autotrophs may be defined as the organism that can prepare their own food with the help of chemical and light. Two types of autotrophs are chemoautotroph and photoautotrophs.
Chemoautotrophs are the organisms that can prepare their own food with the help of chemicals. The bacteria living around deep sea and hot water vents are considered as chemoautotrophs because they prepare their food with the help of carbon present in their surroundings.
Thus, the correct answer is option (A).
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Microbial Soil Organic Matter Decomposition
Organic matter decomposition serves two functions for the microorganisms, providing energy for growth and suppling carbon for the formation of new cells. ... Dead plant residues and plant nutrients become food for the microbes in the soil.
Answer:
with traits best suited to their current environment
Explanation:
Natural selection proposes that nature selects those organisms that are well adapted to the prevailing environmental conditions to survive and reach reproductive maturity with the favourable characteristics being passed on to the offspring. Those organisms that are poorly adapted die leaving no offspring and their traits are eventually eliminated.
Answer:
gas leaks and plastic bottles because it can affect aquatic wildlife
Explanation:
Complete question:
Ecosystems in human-dominated landscapes are generally _____ and _____, and support more species with _____ - selected reproductive strategies, and are typical of _____ succession.
<u>Group of answer choices
</u>
- fragmented, pristine, k, early
- fragmented, disturbed, k, early
- fragmented, disturbed, r, early
- unfragmented, disturbed, r, early
- unfragmented, pristine, r, early
Answer:
The correct answer is number 3. fragmented, disturbed, r, early.
<em>Ecosystems in human-dominated landscapes are generally </em><em>fragmented</em><em> and </em><em>disturbed</em><em>, and support more species with</em><em> r </em><em>- selected reproductive strategies, and are typical of </em><em>early </em><em>succession.
</em>
Explanation:
Species have different strategies to survive in different environments, reproduce, disperse, and compete. These strategies are r strategies and k strategies.
- "r" species have a high growth rate per capita, low competition capabilities. This is why they can colonize new environments. But they can not compete with new-established species. "r" species are often displaced by "k" species. These species are mostly small-sized organisms with short life cycles. They reach sexual maturity early and have numerous descendants spending no time or energy in parental care.
- "k" species have a low growth rate per capita, but they are big competitors with the capacity of displacing other species and monopolizing the available resources. These are big-sized species that live for a long time, reaching sexual maturity in advanced stages of their lives. They do not have numerous progenies, but they spend time in parenting.
r and k strategies are closely related to reproductive strategies, habitat selection, and dispersion ability.
As human-dominated landscapes are generally fragmented and disturbed, new areas are constantly available for r species to colonize them. This is an early stage of succession when these r species arrive in the open perturbated space and colonize it. These r species start a modification in the habitat that makes it suitable for the posterior establishment of later K species. As conditions get better, competition becomes more frequently between species. The first species are eventually eliminated by competition, but new species keep appearing and competing for resources.
