cientists classify clams as consumers. Which observation about clams provides the strongest evidence for this classification? A. Young clams are able to move from place to place. B. Clams gain energy and nutrients by filtering particles from the water. C. Clams use calcium compounds to make a hard shell. D. Clams live on the ocean floor, and sometimes survive without sunlight.

Answers

Answer 1

Answer:

Answer:

The correct answer is option - B.

Explanation:

Clams are the bivalve mollusks that are classified as a consumer or the filter feeder as they internalize the particles and the suspended nutrients and matter in the water to carry out energy and nutrients for them.

These are known as a consumer due to their bivalve body and get its specific structure which is using gills to filter the food or nutrients particle. This makes the clams unique as some other bivalves organisms.

Thus, the correct answer is option - B.

Answer 2

Answer:

The strongest evidence that classifies clams as consumers is that they gain energy and nutrients by filtering particles from the water.

WHAT ARE CONSUMERS:

Consumers are a group of organisms that are incapable of synthesizing their own food, hence, they depend on other organisms for source of energy by feeding on them.

A consumer can be a primary consumer, secondary consumer or tertiary consumer. Primary consumers feed on producers directly while secondary consumers feed on primary consumers and so on.

Therefore, an organism is classified as a consumer on the basis of its mode of nutrition.

Hence, the strongest evidence that classifies clams as consumers is that they gain energy and nutrients by filtering particles from the water.

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12. What term describes the average weather conditions in a geographic area?O A. Weather
O B. Climate
O C. Precipitation
O D. Temperature

Answers

Answer:

The answer is B

Explanation:

Climate is the average weather conditions in a geographic area.

Which of the following statements correctly describes why a series of closely spaced action potentials causes a sustained contraction rather than a series of closely spaced twitches?a. Ca2+ ions are released quickly from troponin, keeping the Ca2+ concentration in the cytosol high between closely spaced action potentials.
b. Release of Ca2+ from the sarcoplasmic reticulum through channels is slow compared to the uptake of Ca2+ into the SR via ATP-dependent pumps, resulting in Ca2+ slowly trickling into the sarcomeres between closely spaced action potentials.
c. When a series of action potentials is closely spaced, there is not sufficient time for Ca2+ uptake into the sarcoplasmic reticulum between action potentials, and Ca2+ remains bound to troponin throughout the series.
d. Fewer Ca2+ ions are released from the sarcoplasmic reticulum as a result of several closely spaced action potentials than as a result of a single action potential.

Answers

Answer:

The correct answer is - option C.

Explanation:

A series of closely spaced action potentials cause the sustained muscle to contract which is only possible if in the sarcomere of muscles the has high Ca2+ during the complete contraction cycle.

If the Ca2+ level is lower due to the sufficient Ca2+ were taken up into the sarcoplasmic reticulum in the sarcomere below the range between each action potential, the muscle would relax because the myosin-binding sites will be covered by tropomyosin.

The Ca2+ channels in the SR are able to move the ions more rapidly than the Ca2+ pumps can move in SR so this will cause the concentration of calcium to always high which leads to the binding of tropomyosin and therefore, the myosin-binding sites would be exposed until the contraction is achieved.

What type of powerful storms is Mercury subject to and where do they come from?

Answers

Answer:

Mercury is wracked by intense magnetic disturbances more extreme than any on Earth, new research suggests

Explanation:

the small, rocky planet also experienced volcanic activity for much longer than once thought, according to several new studies base don observations during the latest flyby of the small, rocky planet by a NASA spacecraft.

Which hypothesis regarding the evolution of hominin bipedalism suggests that this energy-efficient trait arose so that hominins could search for food that was dispersed after climatic changes at the end of the Miocene?

Answers

Answer:

Patchy forest.

Explanation:

The patchy forest hypothesis is the second hypothesis that helps to explain the origin of the hominids. The hypothesis was developed by Peter Rodman and Henry McHenry.

This hypothesis suggest that the evolution of bipedalism is energy efficient in the environment that contain few tress. The patchy forest result in the dispersion of the forest and this might result in the energy efficiency of bipedalism by walking upright and collect their food with hands.

Thus, the correct answer is patchy forest.

Give 3 examples
of other organ systems in the human body.

Answers

Answer:

nervous system, skeletal system, muscular system, cardiovascular system, urinary system and respiratory system are just a few

Explanation:

Answer:

All systems with short explanation

Circulatory system / Cardiovascular system:

Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away.

Keeps the body's temperature in a safe range.

Digestive system and Excretory system:

System to absorb nutrients and remove waste via the gastrointestinal tract, including the mouth, esophagus, stomach and intestines.

Eliminates waste from the body.

Endocrine system:

Influences the function of the body using hormones.

Integumentary system / Exocrine system:

Skin, hair, nails, sweat and other exocrine glands

Immune system and lymphatic system:

Defends the body against pathogens that may harm the body.

The system comprising a network of lymphatic vessels that carry a clear fluid called lymph.

Muscular system:

Enables the body to move using muscles.

Nervous system:

Collects and processes information from the senses via nerves and the brain and tells the muscles to contract to cause physical actions.

Renal system and Urinary system

The system where the kidneys filter blood to produce urine, and get rid of waste.

Reproductive system:

The reproductive organs required for the production of offspring.

Respiratory system:

Brings air into and out of the lungs to absorb oxygen and remove carbon dioxide.

Skeletal System:

Bones maintain the structure of the body and its organs.

Which of these layers is the deepest?

Answers

Answer:

the answer is B. C horizon

Explanation:

AP3X

the deepest layer: horizon

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