After a copper smelter begins operation, local populations of plants downwind of the plant begin to adapt to the resulting air pollution. Scientists document, for example, that the acid tolerance of several plant species has increased significantly in the polluted area. This is an example of a response to:________.
a) stabilizing selection.
b) heterozygote advantage.
c) disruptive selection.
d) genetic drift.
e) directional selection.

I am pessimistic about the future.

Weather events affect both the natural and constructed ecosystems in many nations, but their effects are disproportionately felt in underdeveloped nations and vulnerable groups.

For skill-based employees, such as farmers and factory workers, who also frequently reside in places more susceptible to weather catastrophes, changes to supply chains, agriculture, and employment have disastrous effects.

According to Professor Diego Ramrez-Lovering of Monash University, we must consider the three pillars as a component of a single system. He claims that "habitat, health, and equality" are all intricately related.

Therefore, I am pessimistic about the future.

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Views on the future of our planet are mixed, with pessimism arising from ecological challenges and optimism from technological and social progress. The determinants of our planet's future include current environmental issues, nascent technological solutions, and the proactive engagement of society.

The question of whether one is optimistic or pessimistic about the future of our planet delves into a complex analysis of current environmental, technological, and societal trends. Pessimistic views often stem from the serious challenges we face: ecological collapse, socioeconomic disparities, and the proliferation of weapons of mass destruction. These are exacerbated by the tremendous increase in atmospheric CO₂ since the 1970s and a prevalent culture that prioritizes economic growth without ample regard for ecological realities.

However, there is also room for optimism. The rapid growth of knowledge and technological advancements, like CRISPR and alternative energy sources, could help us manage and mitigate some of these challenges. Furthermore, the activism of concerned scientist-citizens and the demands for systemic change from new generations provide a glimmer of hope that effective global collaborations may arise to address the sustainability of human life on Earth.

Finally, while economics and history show us that predicting the future is fraught with uncertainty, the point made by techno-optimists is salient: we have repeatedly transcended past limitations through innovation and adaptation. So, despite the gravity of the issues, the potential for human ingenuity and social engagement remains a critical counterpoint to a strict pessimistic outlook.

Answer:

B)inducible

C. )extracellular enzyme

Explanation:

Catalase is an enzyme that is engaged during the the decomposition of hydrogen peroxide to form water and oxygen, it is posses by all living organisms because of their exposure to oxygen, hence it protect the cell from oxidative damage by reactive oxygen species.

Catalase enzymes function in our liver by breaking down harmful hydrogen peroxide into oxygen and water ,during this reaction , the bubbles of oxygen gas that escape create a foam that will help to disinfect any surface touch by the raw liver during this process. Catalase enzymes are extracellular enzyme and are inducible.

Answer:

Choose the correct label for each part of the experiment.

The plants that are under a UV light for eight hours

A. Experimental group

The amount of water that is given to all of the plants

D.  controlled Variable

The plants that are under the light for six hours  

B. Control Group

Explanation:

Answer:

Divide plants into two groups of twenty-five. Plant twenty-five seeds in pots with potting soil without compost; this is the control group. Plant the other twenty-five in pots with potting soil and a specific amount of compost added; this is the experimental group. Place the pots under grow lights. After germination, measure the height of the plants at set intervals (e.g., every two days) for a set amount of time (e.g., two weeks). The IV is the presence or absence of compost. The DV is the height of plants. Twenty-five plants per group is a good sample size; all obvious variables are controlled. The experiment is simple and specifically described, so it can be replicated. The seeds were assigned randomly; there is no obvious bias in the experiment.

Answer:

Divide plants into two groups of twenty-five. Plant twenty-five seeds in pots with potting soil without compost; this is the control group. Plant the other twenty-five in pots with potting soil and a specific amount of compost added; this is the experimental group. Place the pots under grow lights. After germination, measure the height of the plants at set intervals (e.g., every two days) for a set amount of time (e.g., two weeks). The IV is the presence or absence of compost. The DV is the height of plants. Twenty-five plants per group is a good sample size; all obvious variables are controlled. The experiment is simple and specifically described, so it can be replicated. The seeds were assigned randomly; there is no obvious bias in the experiment.

Explanation:

Edg 2022 >:)

Answer:

1. A massive star depletes its nuclear fuel; gravity overpowers the star; supernova occurs; core of star collapses

2. black hole; gravitational pull

3. The center of the Milky Way

Explanation:

The description that summarizes the steps that take place during black hole formation, in the correct order is C. A massive star depletes its nuclear fuel; gravity overpowers the star; supernova occurs; the core of the star collapses.

Astronomers think that most galaxies are centered by a black hole which exerts a gravitational pull that binds the galaxy together.

In order for scientists to observe a black hole, they should look at the center of the Milky Way.

Black hole simply means the region of spacetime where there's a strong gravity such that there's no electromagnetic radiation or particles that can escape.

It was believed that black holes were formed after the Big Bang when there was a collapse of the center of a massive star. The formation is that a massive star depletes its nuclear fuel; gravity overpowers the star; supernova occurs; the core of the star collapses

In order for scientists to observe a black hole, they should look at the center of the Milky Way which is the hit collection of gas, stars and dust.

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Answer:

Fluke

Explanation:

A fluke is referred to as trematode, a type of parasitic worm that belong to phylum plathyhelminthes. A fluke has a flattened body structure with about few centimetres long. Flukes do not possess an excretory system, but possess a digestive tract with just one opening that serves  as both mouth and anus. Also, they do not posses respiratory organs .

Flukes possess a body surface that enables it inhabit the digestive system of larger animals and also avoid the effect of digestive enzymes.

These parasitic worms can be found to infect vertebrates and molluscs, such as snails. An example of a fluke is Schistosoma haematobium.

Answer:

transpiration

Answer: transpiration

Explanation:

Answer:

D IS THE ANSWER

Explanation:

I got the answers to the questions right

The sediment size that will most likely be deposited in deeper water farthest from the shore is the slit. That is option D.

Sediment deposition occurs when suspended particles settle down to the bottom of a body of water.

These suspended particles include:

These particles depending on their weight or mass and the speed of water flow settles or deposits faster than the other.

In high flow areas, larger, gravel-sized sediment will settle out first.

Finer particles, including silt and clay, can be carried all the way out to the ocean.

Slit is lighter in weight than clay therefore will be deposited in deeper water farthest from the shore.

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Answer:

chips are a simple carbocarbohydrate and celery is a complex carbocarbohydrate

Explanation:

Answer:

cytokinesis - interphase - mitosis

Explanation:

just took this on edge

In which stage of the cell cycle does the division of the cytoplasm occur?

✔ cytokinesis

In which stage of the cell cycle does replication of DNA occur?

✔ interphase

In which stage of the cell cycle does the division of the nucleus occur?

✔ mitosis

Answer:

Because they take over animals home, food, and lives with poaching, deforestation and pollution.

Explanation:

Answer:

The answer is A: Acetyl COA forms

Explanation:

Options are not provided in the question. The complete question is as following:

The reabsorption of glucose occurs primarily through the walls of the

A. glomerular capsule.

B. nephron loop.

C. proximal convoluted tubule.

D. distal convoluted tubule.

E. renal duct.

Answer:

C. proximal convoluted tubule.

Explanation:

Reabposrtion of glucose is supported by the nephron present in the kidney which mainatain body fluid homeostasis. It maintains extracellular body fluid volume stable  and also maintains the minerals and salts which are essential for body functioning. So, glucose reabsorption is a part of homeostasis.

The process of glucose reabsorption primarily starts through the walls of the  proximal convoluted tubule. proximal convoluted tubule are covered in microvillii and are extensive in length which increases the surface area for absorption. it also contain densly packed mitochndria which provide energy for efficient reabsorption. and then they are tranposrted to proximal straight tuble fo rfurther filteration.

Hence, the correct otpion is C.

The reabsorption of glucose primarily takes place in the proximal convoluted tubule (PCT) of the kidney. Glucose binds with sodium to the symport proteins and is transported into the cell, then it's moved to the interstitial space by facilitated diffusion. Glucose reabsorption has a limit, when this is exceeded, additional glucose is excreted in urine.

The reabsorption of glucose primarily occurs through the walls of the renal tubules, specifically the proximal convoluted tubule (PCT) of the kidney. The PCT part of the renal tubule facilitates reabsorption, where almost all nutrients including glucose are reabsorbed, either through passive or active transport.

Glucose binds simultaneously with sodium ions to symport proteins. Sodium then moves down its electrochemical and concentration gradient into the cell and takes glucose with it. Subsequently, glucose leaves the cell to enter the interstitial space by facilitated diffusion.

However, there's a transport maximum for glucose, represented by the total amount of glucose that the finite number of carrier proteins can handle. When the amount of glucose exceeds this transport maximum, the excess glucose is not transported and it is excreted from the body through the urine. This glucose excretion in urine is often seen in diabetic individuals, referred to as 'spilling glucose into the urine'.

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Answer:

the sun

Explanation:

hope this helps

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Answer:

D) 3 and 4

Explanation:

Pseudopods is a tool for movement in many protists such as amoeba. Pseudopods is the extension of cytoplasm which enables the organism to move from place to place and capture the food by engulf small particles. This protists has chloroplast because chloroplast is responsible for the production of food materials from sunlight in the process of photosynthesis.

A stimulus is a signal to which an organism responds. Stimuli can be internal like hunger or thirst, or external like change in temperature or light. An organism's evolutionary adaptations often determine its responses to these signals.

A signal to which an organism responds is known as a stimulus. Stimuli can be external or internal. External stimuli include changes in the environment like temperature, light, or sound. Internal stimuli come from within the organism itself, such as hunger or thirst. An organism's response to a stimulus is often a result of adaptations developed over time. This reactionary process is a critical aspect of an organism's survival and continued existence.

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Organisms respond to signals or stimuli surrounding them in their environment. These reactions can be a movement towards or away from the stimuli or diverse forms of communication within species. Even single-celled organisms like bacteria can process and respond to environmental signals.

The signal to which an organism responds can vary widely, but generally, it refers to environmental cues or stimuli which trigger a reaction or response in the organism. Sensitivity or response to stimuli is an inherent characteristic of living organisms, emphasizing their ability to interact with their surroundings. This response can include movements towards or away from the source of stimuli (positive or negative response).

For instance, a plant might respond positively to a light source by bending towards it, a reaction known as phototaxis. Likewise, bacteria can move towards or away from chemical sources (chemotaxis) or light (phototaxis).

Communication within species also involves the use of signals as stimuli. Particularly, animals engage in communication using signals that could be visual, aural(sound), chemical (like pheromones), or tactile(touch). In some species such as the three-spined stickleback, a red region in the lower half signals males to become aggressive and females to mate. These stimuli-based responses can be instinctual, learned, or a mix of both.

Single-celled organisms, like bacteria, are also capable of signal processing. They respond to environmental signals like nutrient levels by using intracellular signaling, and sometimes, they release molecules as signals to communicate with each other.

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Answer:

Intrusive rock, also called plutonic rock, igneous rock formed from magma forced into older rocks at depths within the Earth's crust, which then slowly solidifies below the Earth's surface, though it may later be exposed by erosion.

Explanation:

Answer:

Answer is letter D on Eng

Explanation:

Intrusive rock is formed when magma penetrates existing rock.

Answer:

Human activity

Explanation:

I read the article

Answer:

All living things are organized into groups by scientists as they are identified. ... Different scientists use various systems of classification to organize all living things into groups. Overall, the reason scientists classify living things is to understand the relationships between different organisms.

Explanation:

Answer:

West Nile virus is most commonly spread to people by the bite of an infected mosquito. Mosquitoes become infected when they feed on infected birds. Infected mosquitoes then spread West Nile virus to people and other animals by biting them.

Explanation:

The last one I think xd

The digestive and circulatory compartment of cnidarians is called the gastrovascular cavity. So, the correct option is (A).

The word Cnidaria derive from the Greek word "cnidos," which means stinging nettle.

Cnidaria is the phylum which comes under Kingdom Animalia. This phylum contains over 11,000 species of aquatic animals found in both freshwater and marine environments. Their specialty is cnidocytes which are specialized cells which they use mainly to capture prey.

The gastrovascular cavity is defined as the major site for digestion of food and absorption of nutrients in cnidarians in which food passes through the mouth and enters the cavity. Inside the gastrovascular cavity, there is a cell membrane that wraps around food particles and then moves them into the internal cavity.

Thus, the digestive and circulatory compartment of cnidarians is called the gastrovascular cavity. So, the correct option is (A).

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Answer:

E. The author of the health record suspects that a clot is blocking a blood vessel in the patient's calf and has prescribed a drug that will prevent the blood from clotting.

Explanation:

The option E states correctly that the patient has thromboembolism, leading to swelling of the calf. However, the doctor has not yet prescribed a medication. The report states that a medication will be prescribed after a hematology/oncology consultation.

Answer:

The animals at each level use energy, so only a small amount of their energy is available to the next level.

Explanation:

I did it on Study Island

An energy pyramid is a graphical representation of the energy in the trophic levels of an ecosystem. The animals at each level use energy, so only a small amount of their energy is available to the next level due to this, the number of organisms at each level decreases while moving up in the energy pyramid.

The energy pyramid shows the flow of energy from one trophic level to the other which is always upright.

The four levels of energy pyramids are:

The animals at each level use energy, so only a small amount of their energy is available to the next level. It means the energy is lost after each trophic level.

Due to this decrease in energy level at the successive levels, the number of organisms decreases while moving up in the pyramid of energy.

Thus, the correct option is A.

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Answer:

Gina

Explanation:

Answer: Gina

Explanation:

Answer:

d

Explanation:

i learned this a week ago

Answer:

D.) Weathering and erosion

Explanation:

Weathering is the breaking down of rocks through (usually) natural processes such as rain, wind, etc.

Erosion is the process in which the sediments of these rocks are carried away through natural process.

Answer:

B

Explanation:

Brain/nervous system in charge of everything

Shivering stops when the hypothalamus in the brain signals that body temperature has returned to normal, prompting the nervous system to halt the muscle contractions.

When the body begins to shiver due to cold, this is part of a process called thermoregulation, coordinated by the nervous system to maintain homeostasis. The hypothalamus in the brain detects that the body temperature is below its set point and initiates shivering to generate heat. Shivering involves rapid contractions of the skeletal muscles, which help to increase body temperature. Once the temperature returns to the normal range, the hypothalamus sends signals, via the nervous system, to stop the shivering response.

Therefore, the correct answer to the question is B) When body temperature returns to normal, the nervous system sends a message to the muscular system to stop shivering.

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