How can scientists determine when these ancient animals lived?

这到底是什么意思。

本题已由中国数学会官方解答（现有会员：3人）  

Answer:

Yes?

Explanation:

I don't exactly understand the question but yes the carbon dioxide (co2) you breathe out is used by plants where they break it into carbon and oxygen, release the oxygen for us to breathe, and us the carbon to create glucose and ATP.

Answer:

Excrete large quantities of water

Answer:

The femur

Explanation:

Answer:

Osmosis is the scientific process of transferring fluid between molecules. When molecules move in and out of a cell to achieve the same concentration of something, like salt, on both sides, then osmosis is happening. ... The fluid might go back and forth a few times until both solutions are equally concentrated.

Answer:

Movement if water molecules from the region of higher concentration to the region of lower concentration, down a concentration gradient, through a partially permeable membrane, till it reaches equilibrium state.

Sodium ions move inside the side during action potential.

- Action potentials (those electrical impulses that send signals around body) are nothing more than a temporary shift (from negative to positive) in the neuron's membrane potential caused by ions suddenly flowing in and out of the neuron.

- It consists of  phases:

-  An action potential propagates along the cell membrane of an axon until it reaches the terminal button.

To know more about action potential here

https://brainly.com/question/4305583

#SPJ2

Answer:

The respiration would happen in the mitochondria.

Hope I helped! ☺

Answer:

D

Explanation:

This was my science project in like 5th grade (it's really cool!!!)

Answer:

I think the answer is tropical rainforests

Explanation:

Answer:

Tropical rainforests are mainly located between the latitudes of 23.5°N (the Tropic of Cancer) and 23.5°S (the Tropic of Capricorn)—the tropics. Tropical rainforests are found in Central and South America, western and central Africa, western India, Southeast Asia, the island of New Guinea, and Australia.

Answer:

On mating a black chicken with white chicken, the offsprings will inherit B allele from black parent and W allele from white parent. The genotype of offsprings will be BW

Explanation:

A bacteria culture test can help find harmful bacteria in your body. During a bacteria culture test, a sample will be taken from your blood, urine, skin, or other part of your body. The type of sample depends on the location of the suspected infection.

Answer:

Elements which possess characters of both metals and non-metals are called metalloids a and b for 11 and 12

Explanation:

Answer: Woody plants have an extra layer of protection on top of the epidermis made of cork cells known as bark. The vascular tissue of the stem consists of the complex tissues xylem and phloem which carry water and nutrients up and down the length of the stem and are arranged in distinct strands called vascular bundles.

Explanation:

Bark protects woody plants' epidermis with cork cells. Xylem makes up most of a stem's wood, while phloem is in the bark.

Many shrubs and plants have woody stems. The most notable distinction between the two kinds of stems is that woody stems are mostly made of firm cork rather than soft epidermis. As the cork ages, it develops bark and hard woods.

The inner and outer derivative products of the vascular cambium are secondary xylem (wood) and phloem. The primary constituents of xylem are dead cells with thicker cell walls rich in cellulose, hemicelluloses, and lignin. Xylem serves as the plant's mechanical support system and conductor of water and minerals.

Learn more about woody stem, here:

https://brainly.com/question/146263

#SPJ5

Answer:

Ten molecules of NADH, and two molecules of FADH2

Explanation:

Most of the usable energy obtained from the breakdown of carbohydrates or fats is derived by oxidative phosphorylation, which takes place within mitochondria. For example, the breakdown of glucose by glycolysis and the citric acid cycle yields a total of four molecules of ATP, ten molecules of NADH, and two molecules of FADH2. Electrons from NADH and FADH2 are then transferred to molecular oxygen, coupled to the formation of an additional 32 to 34 ATP molecules by oxidative phosphorylation. Electron transport and oxidative phosphorylation are critical activities of protein complexes in the inner mitochondrial membrane, which ultimately serve as the major source of cellular energy.

Answer:

Wow thanks, r u trying 2 get rid of ur points or something?

Explanation:

Answer:

The sun

Explanation:

The sun is a star and a star produces its own source of light

Answer:

1. Cephalic

2. Median Cubital

3. Axillary

4. Brachial

5. Basilic

6. Ulnar

7. Radial

Explanation: is correct

Answer: I think there is medicine can treat common cold, strep throat, rabies you got to get a shot and aids you can get a shot for too!

I think. Um please tell me if I am wrong. If I am right plz give me brainlyest

Explanation:

Answer:they only pull in one direction

Explanation:

Answer

Skeletal muscles only pull in one direction. For this reason they always come in pairs. When one muscle in a pair contracts, to bend a joint for example, its counterpart then contracts and pulls in the opposite direction to straighten the joint out again.

Because autotrophs produce their own food, they are sometimes called producers. ... Most autotrophs use a process called photosynthesis to make their food. In photosynthesis, autotrophs use energy from the sun to convert water from the soil and carbon dioxide from the air into a nutrient called glucose.

Answer:

Please send the image that represent the details.

Answer:

the lower motor neurons which have axons leaving via the ventral spinal roots on their way to innervate muscle fibers

Answer:

Abraham

Explanation:

Answer:

29.2 m

Explanation:

P=mh. Plug in the values.

584 J = 20 kg x h

h = 29.2 m

If it's gravitational potential energy multiply is by gravity which I think is 10 m/s.

Answer:

pyruvate............

Answer:

it is called a gene pool.

Answer:

During transcription, the enzyme RNA polymerase (green) uses DNA as a template to produce a pre-mRNA transcript (pink). The pre-mRNA is processed to form a mature mRNA molecule that can be translated to build the protein molecule (polypeptide) encoded by the original gene.

Explanation: