An amphibian heart is shown in the diagram.



Which statement best describes the three chambers of the heart?

Y receives oxygen-rich blood, X receives carbon dioxide–rich blood, and Z pumps blood.
Z receives oxygen-rich blood, X receives carbon dioxide–rich blood, and Y pumps blood.
X receives oxygen-rich blood, Y receives carbon dioxide–rich blood, and Z pumps blood.
Y receives oxygen-rich blood, Z receives carbon dioxide–rich blood, and X pumps blood.

Y receives oxygen-rich blood, Z receives carbon dioxide–rich blood, and X pumps blood.

Jada often visits a beach near her home. She notices that some areas of the beach are shrinking while other areas are growing. Which statement best explains the cau
these changes?
Both processes are due to erosion.
Both processes are due to deposition.
Some areas are shrinking due to erosion and other areas are growing due to deposition.
Some areas are shrinking due to deposition and other areas are growing due to erosion,

Chose all that apply for spring tides

PLS HELP BIO DNA AND RNA

The diagram shows the life cycle of a pine tree. What does stage 5 show?


D.) Young female cones produce spores from cells that divide using meiosis.

C.) A spore divides and grows into a pollen grain using mitosis.

A.)Young male cones produce spores using meiosis.

B.) A seed develops after the sperm from a pollen grain fertilizes the egg in an ovule.

EXPERT HELP: EXPLAIN THE ANSWER IF YOU DON'T YOU WILL BE REPORTED: What happens during the stage labeled 6?
A. Young male cones produce spores using meiosis.
B. Young female cones produce spores from cells that divide using meiosis.
C. A spore divides and grows into a pollen grain using mitosis
D. A seed that contains an embryo plant grows into a young pine tree.

Crediting Watson & Crick with credit is not fair because...

A few years ago the population of male blue moon butterflies on the island of Samoa declined. One hypothesis for the decline of the male butterflies is that a parasite infected the cells of female butterflies. The parasite was passed to offspring through the females' eggs and killed the male butterfly embryos. At one point during the decline, nearly all the butterflies in the population was females, but after five years the number of males in the population increased significantly. Which explanation most likely accounts for the increase in the number of male butterflies in the five years after the initial parasite problem?​

EXPERT HELP: EXPLAIN THE ANSWER

EXPERT HELP: EXPLAIN THE ANSWER:


What happens during the stage labeled 6?


A. Young male cones produce spores using meiosis.


B. Young female cones produce spores from cells that divide using meiosis.


C. A spore divides and grows into a pollen grain using mitosis


D. A seed that contains an embryo plant grows into a young pine tree.

Please help me not timed but still need help: Which nitrogen base sequence is the partner of C–A–T–C–G–A?
C–A–T–C–G–A
G–T–A–G–C–T
T–G–C–T–A–G
G–C–A–T–G–T

Help me on all those including the second one (extra point for hardness)

A geologist wants to determine the age of rock formations in which of these locations would NOT be helpful to use the law of superposition to date a rock formation?
o on a wall of limestone in Florida because the chemical weathering would change the composition of the layers of sediment
o on the walls of the Grand Canyon above the Colorado River because the process of erosion would have worn away the layers
oina subsurtece canyon of the contine of Cuba because the ocean current would smooth the surface making the layers hard to see
o on a mountain formed by the upthrust of magma in California because the mountain building process would have disturbed the rock layers
Pro
P
o
M
DOLL

helpppp plzzzz
plz answer

How does e-coli belong to the bacteria kingdom? Please provide evidence

If a species of Fish's environment slowly become more and more salty, how would the species of fish adapt so they could survive?

Write a word summary of the article “There’s a gene for life in high-altitude Tibet.”

pls pls answer this question i need it and pls no silly answer or i will have to report question in the pic

PLEASE HELP WILL MARK BRAINLIEST!!: List three things you can do to help protect the environment.

Which of the following statements about natural selection is most accurate

Explain which type of mutation (substitution or frameshift) would be more likely to create a new protein.

EXPERT HELP I'LL GIVE BRAINLIEST:

Which number represents water becoming water vapor in the hydrologic cycle diagram?


1


2


3


4

A(n) ____________ is when the Moon falls into the shadow of the Earth.

Here is what you and the women see when you look through the electron microscope. What is your conclusion about whether polio is a virus, and why? What would you recommend for polio prevention?

Which characteristic does a baby giraffe inherit from its parent?
A: A long neck and spots
B: Knowing how to escape danger
C: Learning to eat from trees
D: The ability to find water

A(n) ____________ is the outer part of the shadow that remains partially lit during an eclipse.

This is for Science it is due today I don't understand plz help
What would happen to the organisms in a particular biome if there was a drastic temperature change? (I.E., If the desert received torrential rain or if the tundra experienced global warming X10)

If scientists are studying the birds, crabs, and grass, but not the water or rocks in a salt marsh, what level of organization would they be studying?

A. Community

B. Organism

C. Ecosystem

D. Population

Compare and Contrast Plant And Animal Cell

Which inherited characteristic will a toucan pass on to its offspring?
A: A colorful beak
B: Black fur
C: The ability to sing
D: The skills to build a nest