there are more birds because there are 100 billon birds
C4 plants are able to photosynthesize more efficiently than C3 plants because they have a specialized mechanism that helps them minimize water loss and increase carbon dioxide uptake, allowing them to thrive in hot and dry conditions.
possibly, different animals have different chromosome numbers, as do plants... so the chances are that yes there will be some plants that have the same amount of chromosomes as certain animals have... but they could never combine or cross with each other
C4 plants are not inherently larger than C3 plants. However, they are typically more efficient in photosynthesis due to their carbon fixation mechanism, which can help them grow better in certain conditions like high heat and drought.
A perennial lives for more than a year.Most plants in their natural habitats live far longer than a year. Few plants are adapted to die each year and not regrow. In North America many plants are classified as annual when they complete their life cycle and die within a year. A plant that lives more than a year are called perennials.
Generally speaking the larger the area of a single plant then the more oxygen it will produce. However the overall area covered by marine or water plants is far larger than land based plants, therefore marine plants produce more oxygen than land plants.
Crop plants are more susceptible to insects
Because adult plants requirement for water and minerals is more than a young plant.
More people eat meat then car about there plants and they have a way of producing oxegon
more cells in plants.
People have recycled and planted many trees and plants that will gives fresh air and more of it is here today.
Generally, the mountains receive more precipitation than does a desert so more plants are able to grow there.
plants need more water than animals do
Yes. To get a steak you have to spend a lot of energy on growing plants as food for the animal that will become the steak. And animals aren't that good at turning plants into meat, so you have to feed them a lot more than they produce. If you grow plants to feed to people directly instead, bypassing the animal, the same amount of plants will feed a lot more people than the animal did.
When there are too many plants, some of them are crowded out their neighbors and die. This happens all the time anyway; things die, and new things grow in their places. There cannot actually be "too many" plants.
on average, yes.
yes
there will be no ecosystem