A fossil is found that shows the organism that produced it had a skeleton and also suggests that the organism may have had hair covering it's body. Based on this evidence, it can also be assumed that the organism is a member of the domain

Answers

Answer 1

Answer: The Domain Archaea wasn't recognized as a major domain of life until quite recently and,
The Eukaryota Domain include the organisms that most people are most familiar with - all animals, plants, fungi, and protists and animals have hair and skeleton.

Answer 2

Answer:

A fossil is found that shows the organism that produced it had a skeleton and also suggests that the organism may have had hair covering its body. Based on this evidence, it can also be assumed that the organism is a member of the domain

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30 pointsWhich of the images below represents a healthy coral reef ecosystem?

How does summation operate in a post-synaptic cell? A). It adds up all of the previous action potentials and releases one of that value. B). Post-synaptic cells do not fire. C). Input from many cells is required for it to fire. D). Sodium ions are moved from one cell to the next in an additive way.

Answers

The way that summation operates in a post-synaptic cell is that the C) input from many cells is required for it to fire.

How are the parts of the solution mixed? A) chemically.

B) physically.

C) only in water.

D) by electronic means.

Answers

B) physically

The solute and the solvent are physically mixed/combined in a solution.

it would b B.physically because solution is a mixture and mixture is formed by physical change not by chemical

If you cannot directly test your hypothesis you can use a…(Select all that apply)
A. Model
B. Simulation
C. Movie
D. Survey

Answers

The answer to this question is Simulation !

How you do this and I need help

Answers

Consumers make up the
next trophic level; and must
eat other organisms to obtain
their energy. Consumers, in
turn, occupy different trophic
levels. Trophic levels of
common aquatic organisms
are shown in table 1.
Primary consumers are
herbivores, they eat plants.
In our aquatic ecosystem
example, zooplankton feeding
on phytoplankton occupy the
primary consumer trophic
level. Cattle are primary
consumers in terrestrial
ecosystems.
Secondary consumers,
represented by certain aquatic
insects are carnivores and
feed upon primary consumers,
the zooplankton.
Our example also includes
a tertiary consumer, the
largemouth bass that feeds
upon other carnivores.

Which of the following best explains ways in which fish and mammals differ? (2 points)Fish are invertebrates and have scales and paired fins, while mammals are vertebrates and have fur or hair.
Fish are ectothermic and lay eggs to reproduce, while mammals are endothermic and give live birth to offspring.
Fish are endothermic and have gills, while mammals are ectothermic and have lungs.
Fish have streamlined bodies and three-chambered hearts, while mammals are bipedal and have four-chambered hearts.

Answers

The answer is Fish are ectothermic and lay eggs to reproduce, while mammals are endothermic and give live birth to offspring.

Through the elimination process:
* Fish are invertebrates and have scales and paired fins, while mammals are vertebrates and have fur or hair. - Fish are vertebrates!
* Fish are endothermic and have gills, while mammals are ectothermic and have lungs. - Fish are ectothermic (cold-blooded), and mammals are endothermic (warm-blooded)!
* Fish have streamlined bodies and three-chambered hearts, while mammals are bipedal and have four-chambered hearts. - Fish have four chambered hearts and not all mammals are bipedal!

This leaves choice: Fish are ectothermic and lay eggs to reproduce, while mammals are endothermic and give live birth to offspring. All of this is true, but it should be taken into consideration that some fish give live birth and some mammals lay eggs, but this is the most possible choice among all mentioned.

Answer: Fish are ectothermic and lay eggs to reproduce, while mammals are endothermic and give live birth to offspring.

Explanation: Is correct answer

20. What are three common clues that a chemical change has occurred?

Answers

The right answer is Change in color, production of gas, formation of precipitate.

Chemical changes alter the nature and characteristic properties of matter. New substances are formed as a result of the reaction.

It is said that a pure substance has undergone a chemical change if it has been transformed into one or more new pure substances which do not have the same properties as the starting substance.

The characteristic properties of the substances disappear and the products formed have new properties.

There are several (even more than three) that can recognize the presence of a chemical change.

* The formation of a gas (effervescence)

* Production or absorption of heat

* The production of bright light

* A significant color change

* A change of smell

* The formation of a precipitate

Three common clues that a chemical change has occured are a change in color, change in odor, and the formation of a precipitate.

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