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Dahasolnce [82]
2 years ago
8

An ecosystem is a community of living organisms and the nonliving components of the environment Energy flows in an ecosystem in

one direction through food chains, and a food web is made up of all the food chains within a community of organisms. Biodiversity refers to the variation in species found within an ecosystem, and it is measured in two ways: (1)
species richness, which is the total number of different species in an ecosystem; and (2) relative abundance, which is a measure of how common each species is within the ecosystem
Imagine that carnivore D represents the sea lamprey in the Great Lakes ecosystem. This invasive species has been present there
since the 1800's yet the ecosystem has remained stable. How can you explain this?
A) The sea lampreys are indigenous to salt water and have a very short life
span
B) There are complex feeding mechanisms at work to protect the other
species in the food web.
C) The sea lampreys only feed on one type of fish so they have only depleted
that single population.
D) Marine scientists have developed a method to effectively remove the
Lampreys from the Great Lakes.
Biology
1 answer:
LenaWriter [7]2 years ago
5 0

Answer:

B

Explanation:

there are complex feeding mechanisms at work to protect the other species in the food web

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One of the most common methods of differentiating between early hominid stages of human evolution is through examining what?
REY [17]

The early hominid stages can be differentiated from one another based on the complexity of the tools used by these species. The tool evolved along with the evolution of the humans. The more the hominids evolved by more complex their tools became.  The tools made by the earliest hominids were used to fish out the termites. These tool developed and became more widely used as the humans evolved.

Hence, the answer is 'by observing the complexity of the tools'.

3 0
4 years ago
You track aquatic coastal levels of nitrogen and phosphorus at high latitudes and notice a sharp increase in the winter and then
nordsb [41]

Answer:

A considerable increase in phytoplankton populations in winter, and a greater increase in spring due to increase in light intensity.

Explanation:

Nitrogen and phosphorus are important nutrients required by phytoplankton populations. The growth of phytoplankton populations is dependent on the level of the availability of Nitrogen and Phosphorus in the presence of sunlight.

A rise in the aquatic coastal levels of nitrogen and phosphorus would result in a great increase in phytoplankton populations in spring, as stimulated by nutrient enrichment coupled with the availability of sunlight during spring. Phytoplankton populations would increase also in winter but not as high when compared to the rise in population in spring

3 0
3 years ago
Are rocks hard i dont know if rocks are hard
Ray Of Light [21]
It is extremely useful for geologists, because most specimens of a given mineral are very close to the same hardness. ... So, we can conclude that not all the rocks are hard, and the hardness of rocks depends on how the atoms of the rock's minerals are bound to each other and how they are arranged.
8 0
3 years ago
Organs are made of different kinds of that work together.
Annette [7]

Answer:

Organs are made of different kinds of tissues that work together.

Explanation:

All the organs are made of tissues, the organ level is the next level up from tissues. The groups of tissues work together. The tissues are specialized cell group, the animal body is made of 4 types of tissues: epithelial, connective, muscle, nervous.  

Organs and tissues are levels of organization. Organs are structures made up of two or more tissues, together they carry out a particular function.

6 0
3 years ago
I don't really understand just started high school
Ksenya-84 [330]
A forest fire would burn large trees, fertilizing the soil and makes room for smaller plants to grow, which provides more food for herbivores. The lack of trees also makes it easier for carnivores to hunt prey. Good luck in high school!
7 0
3 years ago
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