what led scientists to date the burgess shale fossils to the Cambrian explosion

Answers

Answer 1

Answer:

Burgess Shale has the best record we have of Cambrian animal fossils. The locality reveals the presence of creatures originating from the Cambrian explosion, an evolutionary burst of animal origins dating 545 to 525 million years ago. During this period, life was restricted to the world's oceans.

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A siren and a newt are classified in the salamander family. What characteristics may have been used to group them?

Answers

Answer:

Long slender bodies, blunt snouts, and a tail.

Explanation:

A salamander is classified as an amphibian with lizard-like appearances, long body, slender body, blunt snouts, short protruding limbs, and a tail present in adults and tadpoles.

Newts have slender bodies, blunt snouts, and a tail.

Sirens have long bodies, blunt snouts, and a tail.

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What would most likely increase the genetic variation in a population of
organisms?

Answers

Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation. New genetic variation can be created within generations in a population, so a population with rapid reproduction rates will probably have high genetic variation.

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The answer is a microscope

You answer would be

A Microscope

What parts of the body usually do not contain “helpful” bacteria?

Answers

Answer:

circulatory system

Explanation:

the circulatory system!

can someone help me please

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Answer:c, c, b

Explanation:

Answer: C, C, B

Explanation:

Please help me!!!!!!!!

Answers

I'm pretty sure it's A.

Answer:

A.) is right

Explanation:

Explain where the enzymes for electron transport are located in bacteria (prokaryotes) if they don't have internal membranes, and therefore do not have a mitochondria

Answers

In bacteria, all enzymes responsible for the electron transport chain are located in the CELL MEMBRANE.

Bacteria lack mitochondria, i.e. bacteria have no membrane-bound organelles.

In consequence, bacterial enzymes responsible for the electron transport chain are localized in the plasma membrane.

The electrochemical proton (H+) gradient required to create Adenosine triphosphate (ATP) from ADP and phosphate (Pi) is generated across the plasma bacterial membrane.

In bacteria, the electron transport chain is generally shorter and contains a lower phosphorus-oxygen ratio than the mitochondrial (eukaryotic) electron transport chain.

In conclusion, in bacteria, all enzymes responsible for the electron transport chain are located in the CELL MEMBRANE.

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can someone help me ill give brainlist

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Answer:

I am certain that this is the answer

what is meaning of cleavage

need help this is science

Answers

Ummmmm , you need a meaning for cleavage

Answer:

Its a sharp division or split, Like if you cause cleavage in a rockits just like slicing it.

Explanation:

Which of the following statements is true?

(A) Mutation is the only way to vary the gene pool in a population that reproduces by sexual reproduction.

(B) Fewer harmful mutations are inherited by sexual reproduction than by asexual reproduction.

(C) Sexual reproduction is faster than asexual reproduction.

(D) Offspring from asexual reproduction have more genetic variety than offspring from sexual reproduction.

Answers

Answer:

D is true because young ones produced from asexual reproduction carry more genetic variety

The US Constitution mandates a census every __________ years.
A.
five
B.
ten
C.
fifteen
D.
twenty

Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

B ten years is the answer

b

explanation:

it happens every ten years

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Answers

I agree with this other guy slugs r rlly cool and it’s also B

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