What do scientist use to determine the begining or end of a geologic time period?
mass extinctions
diversification of life
index fossils
supercontinent formation and movement
Answer:
i think it is c
Explanation:
The fossil forms that occur in the rocks, however, provide the chief means of establishing a geologic time scale, with the timing of the emergence and disappearance of widespread species from the fossil record being used to delineate the beginnings and endings of ages, epochs, periods, and other intervals. i am not trying to copy the other guy or girl
A small inflamed elevation filled with bacterial fluid and pus and appear red and cloudy or white is known as a: Select one: a. milia b. pustule c. cystic acne d. seborrhea
Answer:
C. Pustule
Explanation:
Please label this photo pleaseee immediately
Answer: The answer is in the image.
describe 2 ways that mitosis is important for your body.
Answer: your cells are extremely hard
Explanation:
Which of the following facts is the best example of molecular DNA evidence that
supports the Theory of Evolution?
A. Humans and chimpanzees share between 95% and 98.5% of their DNA.
B. The embryos of humans and chickens share similar features early in development.
C. Humans, penguins, alligators, and bats all share forelimbs with homologous structures.
D. In the fossil record, plants are found below reptile fossils. Im guessing that its A
Answer: A I think.
Explanation:
Cuz M O N K E S Are just like humans!
I think the answer is A since human beings evolved from an ape
what solution, (hypertonic, hypotonic, isotonic) would make osmosis go faster?
Answer:
Explanation:
Osmosis is the movement of WATER molecules across a semipermeable membrane (such as the cell membrane) from where there is a high concentration of water to where there is a low concentration of water. The interior of a living cell consists of cytoplasm, which is a solution of mostly water with dissolved substances such as salt.
Now for the fun stuff! An Isotonic solution is a solution that has the same concentration of dissolved substances as is found inside the cell. If a cell is surrounded by isotonic solution, then there is no net movement of water across the membrane by osmosis, because the concentration of water is the same on both sides of the membrane.
A hypertonic solution is a solution with a higher concentration of dissolved substances than is found inside the cell. If a cell is surrounded by hypertonic solution, then water will move OUT of the cell by osmosis because there is a higher concentration of water inside the cell compared to outside (where there is lots of dissolved salt, etc.) A cell in hypertonic solution will shrink.
A hypotonic solution is a solution with a lower concentration of dissolved substances than is found inside the cell. If a cell is surrounded by hypotonic solution, then water will move INTO the cell by osmosis because there is a higher concentration of water outside the cell compared to inside. A cell in hypotonic solution will swell up and, if there is no cell wall, may burst. A silly but simple way to remember that water moves into a cell in hypotonic solution is that "hypo causes the cell to swell up like a hippo"
in an experiment describe photosynthesis
The organelles that break down lipids, carbohydrates, and proteins into
small molecules that can be used by the cell are called *
A. vacuoles
B. lysosomes
C. ribosomes
D. microfilaments
Plzzz help me I need help I gotta turn this in tomorrow
Answer: 4.
Explanation:
Which group shown in this figure contains the highest biodiversity
Answer:
insects
I think
hope this helps and I am not sure
The prominent indentation on the medial surface of the kidney is the:
Answer:
The hilus
Explanation:
Each kidney has a prominent medial indentation called the hilus
. What is needed to support or back up a claim? examples and non-examples thoughts and feelings reasons and examples facts and opinions
Answer:
Reasons And Examples,
Explanation:
You need to figure out what your claim is about to support or back it up
Hope This Helps! Please Mark Brainiest
we need more raw materials with recycling true or false.
Answer:
true
Explanation:
in medice agriculture and conservation application of biotechnology the common gentic unit used is the
Answer:
I don not know about this one. I only know that agriculture is farming. Happy to help...
Explanation:
What is the defination for monocots and it's characteristics?
Explanation:
Definition of monocot
: a chiefly herbaceous angiospermous plant (such as a grass, lily, or palm) having an embryo with a single cotyledon, usually parallel-veined leaves, and floral organs arranged in multiples of three : monocotyledon Monocots account for a quarter of all flowering plants.
Match each part of the lymphatic system with the correct label.
Answer:
1 Cervical Lymph Nodes
2 Right Lymphatic Duct
3 Axillary Lymph Nodes
4 Thoracic Duct
5 Cisterna Chyli
6 Peyer's Patches
7 Inguinal Lymph Nodes
Explanation: are correct
Answer:
1 Cervical Lymph Nodes
2 Right Lymphatic Duct
3 Axillary Lymph Nodes
4 Thoracic Duct
5 Cisterna Chyli
6 Peyer's Patches
7 Inguinal Lymph Nodes
Explanation:
Why do organisms perform fermentation? in short and simple plsss
Answer: Because muscle cells cannot get oxygen fast enough to meet their energy needs through aerobic respiration.
How are seeds produced
Answer:
From other seeds
Explanation:
They grow more seeds form the one seed
Answer:
From plant reproduction.
Explanation:
Plants produce flowers to make seeds. To make a seed a flower must be pollinated. Pollen from the male part of one flower travels to the female part of another flower where the seeds are made. Most, but not all plants, have both male and female parts inside one flower. The stigma is usually in the centre and the stamens, which produce the pollen, cluster around it. The petals act like an advertisement to attract various animals, which will carry the pollen from one flower to another.
1.3.1 Project - Semester 1 Honors Biology Project, Part 1 (Project) PLEASE DONT KNOW WHAT IT TOPICS IT MEANS TO CHOOSE FOR THIS PROJECT
Answer:
This is very vague. I am pretty sure that there are other instructions.
what are the different variations of genes called?
Answer: Different versions of a gene are called alleles.
Which of these is FALSE?
a
Cells use ATP for cell work
b
Breaking down glucose gives off energy
c
Breaking down ATP gives off energy
d
1 ATP has more energy than 1 glucose
Answer:
D is false
Explanation:
D is false because after breaking down 1 glucose, around 36-38 ATP will be produced from ADP
A is true because cells use ATP for work
B is true, as breaking glucose makes ATP, which is just stored energy
C is true too, since ATP is an ADP connected to a phosphate. This bond contains energy and detaching the phosphate will power parts of the cell, for instance active transport systems.
what is all of the dna in a set of 23 chromosomes referred to as?
Answer: The Genome
Explanation:
a change in DNA structure that might be beneficial, harmful, or neutral. What is all of the DNA in a set of 23 chromosomes referred to as? The genome
I deperately need help
Answer:
Crohn's disease is a type of inflammatory bowel disease (IBD). It causes inflammation of your digestive tract, which can lead to abdominal pain, severe diarrhea, fatigue, weight loss, and malnutrition. Inflammation caused by Crohn's disease can involve different areas of the digestive tract in different people
Explanation:
What types of cells perform photosynthesis?
a
All prokaryotic
b
All animals
c
All eukaryotic
d
All plants
Answer:
All plants
Explanation:
This is due to the presence of chorophlly . the green colouring pigment in plants
plssss mark brainliest
_______________________ are the components of most non-clastic rocks.
Dissolved minerals
Sediment and small rocks
Seashells
Limestone and fossils
Clay and pebbles
Angled rocks and clay
Answer:
Limestone, dolomite and chert.
AKA Limestone and fossils.
Chert is of biological origin and limestone is composed of tiny fossils. Dolomite is a form of limestone. Non-clastic sedimentary rocks are formed organically.
when preparing pure cultures, dilution is necessary for
Dilution is necessary during pure culture preparation to reduce the bacterial load and allow readable colonies to grow.
Dilution of bacteria culture is carried out in comparison to McCfarlan standard so as to have a decent number of bacteria that will not be too numerous or too little to observe the growth of distinct colonies during culture preparation.
Without dilution, colonies may form but may be too numerous to count. Too much dilution may also lead to no growth in the culture plates.
More on pure culture preparation can be found here: https://brainly.com/question/9886600?referrer=searchResults
Process that requires oxygen
Answer:
Cellular respiration
Explanation:
For each of the following statements, determine if it is true or false and describe how you know.
A. All living organisms share the same sequence of nitrogen bases.
B. All living organisms share common organelles.
C. All living organisms share the process for reproducing.
D. All living organisms share a universal genetic code.
I thinck Letter C
Explanation:
Noo need explanation.
how long after conception can you get a positive pregnancy test
Answer: Although many tests indicate you can test as soon as five days before your next period, the most accurate results will be obtained after you have missed your period and the earliest a test can provide an accurate reading is 14 days after conception. Tests differ in sensitivity in detecting HCG in the urine.
Explanation:
where might we see changes in concentration in nature and how could these changes affect living organisms?
Answer:
Explanation:
Any change in the climate of an area can affect the plants and animals living there, as well as the makeup of the entire ecosystem. Some species are already responding to a warmer climate by moving to cooler locations. ... Climate change also alters the life cycles of plants and animals
