Which is an example of trace fossils?
A. an insect getting stuck in a tree sap that hardened
B. sediment hardening around a trilobite
C. footprints from a dinosaur in mud that hardened
D. minerals replacing tissue in wood and hardening

Answer:

A. An insect getting stuck in tree sap that hardened

Explanation:

The answer is A because that is one of the ways to collect DNA samples for animals. The other way is digging for fossils.

Help I Have a 54 in science

Although male and female reproductive structures differ from one another in many ways, they carry out some of the same functions. Which of the following is a main function of both male and female reproductive systems?

Please help thx!!!!!!!!

What is the density of a cube that has a volume of 3 cm3 and a mass of 12 g?

Scientists studied the evolution of horses. They concluded that horses evolved with the emergence of grasslands and an increase of predators. The digits of their early Eocene ancestor evolved into hooves. The diet changed from foliage to grasses. The molar teeth developed and became stronger. Which statements are supported by this evidence?
The digits of the horses’ feet underwent modifications, enabling them to run faster from predators.
The molars of the horses underwent changes so they could chew meat.
The emergence of grasslands over time led to the development of strong molar teeth in horses.
The digits were modified to enable the horses to graze better on hard, rocky surfaces.
Molars became bigger to fit into the jaw structure of modern horses.


You have to pick two

Study the table about Earth’s interior.

A 4 column table with 5 rows. First column is unlabeled with entries: Crust, uppercase mantle, Lower mantle, Outer core, Inner core. Second column is labeled Thickness in kilometers with entries: 30, 720, 2,171, 2,259, 1,221. Third column is labeled Density in grams per centimeters cubed, divided into Top and Bottom columns. Top entries are: 2.2, 3.4, 4.4, 9.9, 12.8. Bottom entries are 2.9, 4.4, 5.6, 12.2, 13.1. Fourth column is labeled Types of Rock Found with entries: Silicic rocks, Peridotite, Magnesium and silicon oxides, Iron plus oxygen, Iron plus oxygen.

Which conclusion is supported by information in the table?

The mantle is thinner than the crust.
The core is the thickest of Earth’s layers.
The inner core is thicker than the outer core.
The mantle is the thinnest of Earth’s layers.

Researchers have been studying how emissions from both volcanoes and human activities, such as the burning of fossil fuels, impact the atmosphere. Both types of emissions contribute to the total CO2 levels in the atmosphere. Graph 2 shows that atmospheric CO2 levels have been steadily increasing over time. This increase in CO2 levels has been linked to the increase in global surface temperatures.

Explain why the total mass of carbon must be decreasing in a different step of the slow carbon cycle based on the on the increase in atmospheric CO2.

please please help!! i'm struggling,,

In what way does an earthquake provide evidence about the layers of Earth? Use complete sentences to write your answer.

A line graph shows?

A.changes in the dependent variable only
B.changes in the dependent variable only
C. how the dependent variable changes in response to the dependent variable
D. how the dependent variable changes on its own ​

Help 15 points

What 2 major air masses lead to the tornadoes in Tornado Alley?

Do you think that humans and humpback whales share a common evolutionary lineage?

Please help, this is to difficult for my last two brain cells to configure ;-;

Does anyone know something that I could do to help myself focus bcs I have ADD and I'm failing?

Cystic fibrosis is a recessive gene disorder. The pedigree chart for a family known to have cystic fibrosis is shown below.

What percentage of the offspring either are carriers or have observable disease?

25%
50%
75%
100%

The bending of plants toward the light sources serves which purpose in terms of plant’s metabolism?

In the boxes below, fill in the appropriate neuron parts, structures, or functions.

Which choice is involved in both sexual and asexual reproduction?


spores


eggs


sperm


seeds

Instructions: Write a new argument that supports the sub claim you chose above. This argument will be the second part of the press release, so make sure it is clear and convincing. • Include evidence and explain how this evidence supports this sub claim. • Look back at your work from this lesson. • You may also want to use the Argumentation Sentence Starters for help with organizing your thinking and constructing your argument.

The subclaim is; Bacteria from the fecal transplant can help the patient’s body produce immune cells that kill invading bacteria.

First-person to answer with an explanation get brainliest
A student is comparing the organelles found in the cells of a milkweed plant and in the
cells of a butterfly, using the Venn diagram shown below.

Where should the student place the terms “chloroplasts” and “mitochondria”?

Electricity is defined as
A flow air
B flowing atoms
C flow of electrons
D flow of water

arious impairments of the mind are commonly associated with old age. To what extent are these biological in origin? To what extent, social in origin?

Does anyone know anything about rabbits?

A scientist observes two stars in the night sky through a telescope. Star A is white in color and relatively dim. The star’s estimated temperature is very high.

Star B is red in color and extremely bright. The star’s temperature is low compared with other stars.

Help the scientist classify the two stars.

Please Help!!!! Thank You! 15 points!

help me please put the names of the planets in increasing order based on their distance from the Sun.

The water cycle is also called the Hydrolic Cycle.
It is the process by which water circulates between Earth’s oceans, atmosphere, and land.
It involves the following:
Water storage
evaporation
transpiration


_________________________
_________________________

_________________________ hold 96.5% of Earth’s water.
This is the primary pathway into the water cycle.
Oceans, seas, lakes, and rivers provide _____% of the moisture in our atmosphere through evaporation.

The process by which water changes from a _________________________ to a _________________________ .
It is the primary pathway that water moved from the liquid state back into the water cycle as _________________________ .
_________________________ (energy) from the sun is necessary for evaporation to occur.
Energy _________________________ bonds that hold water molecules together.
Boiling Point: _________________________
Freezing Point: __________________________
_________________________ is the process of snow and ice changing into water vapor without first melting into water.
_________________________ is water lost to the atmosphere when the ground surface and transpiration of groundwater by plants through leaves.

Superhighway used to transport water around the globe.
Involves _________________________ and _________________________ .

The process in which water vapor in the air changed into _________________________ .
The loss of _________________________ allows water molecules to bond,
Forms _________________________ or _________________________ .

Is water released from clouds in the form of:
_________________________
_________________________
_________________________
_________________________
_________________________
Provides the delivery system of _________________________ water to the Earth.

These are examples of water locked up in its present state of matter for a relatively long period of time.
This involves _________________________ and _________________________ .

This is _________________________ that did not get absorbed into soil, or evaporate.
_________________________ and _________________________ provides runoff when they melt._________________________
Water moved by _________________________ makes its way into places that collect water.
_________________________
_________________________
_________________________
_________________________

This is the downward process of moving water from the _________________________ into soil or poros rock.
_________________________ is large amounts of water stored in the ground.
_________________________ is another name for groundwater.


This is the area of land where all the water that dallas in it and grains off of, goes into the same place.
It can be as small as a footprint or as large as all the land that drains water into the _________________________ .

What can scientists learn about fossils using techniques of absolute age-dating?
A. estimated ages of fossils in rock layers.
B. precise ages of fossils in rock layers.
C. causes of fossil disappearances in rock layers.
D. structural similarities to other fossils in rock layers.

Every compound can be represented by a chemical formula. A chemical formula is the set of symbols showing the elements that make up a compound and their proportions. Water’s chemical formula is H_2 ​2 ​​ O. That means a molecule of water contains two atoms of hydrogen and one atom of oxygen chemically bonded. A molecule is a group of two or more atoms bonded together. Molecules can range in size from two to thousands of atoms. A molecule of a compound is the smallest unit of that compound. Every molecule of water has all the physical and chemical properties of water. That’s because every molecule of water is made of the same elements in the same proportions: two hydrogen atoms and one oxygen! Which of the following is a true statement?

A
Every molecule of the same compound will have different properties.

B
Every molecule of a compound has the same proportion of elements.

C
Molecules can be physically separated into smaller units of a compound.

D
Molecules cannot be represented by chemical formulae.

Robins feed on earthworms, which live in moist soil. If a drought took place, we could expect the number of ___________.

In the image below, which objects would have a greater gravitational force between them, Objects A and B, or Objects B and C? Give one supporting detail for your answer.