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slavikrds [6]
3 years ago
6

What did the earliest vascular plants have

Biology
1 answer:
Nastasia [14]3 years ago
5 0

These had no leaves or roots, instead they had green photosynthetic stems which served as both anchors in the ground and photosynthetic surface.

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DD in top left Dd in top right dd in bottom right 75% dimples and 25% no dimples
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2 years ago
Which term refers to the thick folds of tissue found on each of the cerebral hemispheres?.
Leno4ka [110]

Answer: A gyrus (plural = gyri) is the ridge of one of those wrinkles, and a sulcus (plural = sulci) is the groove between two gyri. The pattern of these folds of tissue indicates specific regions of the cerebral cortex. The head is limited by the size of the birth canal, and the brain must fit inside the cranial cavity of the skull.

Explanation: Hope this helps :)

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2 years ago
According to the model, what is the role of RNA in DNA replication? A) RNA has no role in DNA replication B) RNA acts as a prime
rjkz [21]
The answer is B. Primase produces RNA, making it a type of RNA polymerase. RNA is complimentary to a single strand of DNA.
8 0
3 years ago
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4. Some animals that live in the desert don't move often, if at all, during the day in
FinnZ [79.3K]

Answer: Estivation

Explanation:

Non-mammalian animals that cannot maintain their body temperature by its own. They need to adapt certain phenomenon to survive in the existing conditions.

The animals in the desert like snakes, reptiles, North American tortoise, also maintain their body temperature and maintain an adequate amount of water inside the body.

The animals in the desert do not move out during the daytime in order to conserve water and energy.

This phenomenon is season and is known as estivation.

3 0
3 years ago
Match the following
Brilliant_brown [7]

Answer:

Matches according to the terms

Explanation:

1. Stratosphere: The layer of the atmosphere that the ozone layer is part of

2.Recycle:  the process by  which certain waste  materials, such glass, aluminum, and paper are  prepared for reuse

3. Hazardous: the type of solid, liquid, or gas wastes that are      

   toxic,flammable, corrosive, reactive, or radioactive

4. Biodegradable: The type of wastes that can be broken down by other organisms into a reusable form

5.Nicotine: The addictive drug found in tobacco

6. Cancer: A disease frequently developed by smokers and passive smokers.

7.Diabetes:  A disease of the pancreas in which insulin is not produced in

The correct amounts so that glucose can be converted into

energy or stored as fat (insulin not given in the option)

8.Ozone: Organic compounds (VOCs), and nitrogen dioxide (NO) are

acted upon by sunlight

9.Plastic: When burned, it can cause an increase of CO2, ozone, and  sulfur dioxide in the atmosphere

10. Fossil fuel: Sulfur dioxide,aluminium,

11.Ozone: formed in the atmosphere when chemicals, called volatile

7 0
3 years ago
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